ChatGPT's shortlist: contract packagers in Pennsylvania

Places ChatGPT showed

• Econo Pak · 4.1★ · Packaging company
• Millennium packaging inc building 5 · 4.0★ · Manufacturer
• PakSafe Industries · 4.4★ · Warehouse
• ProStar Packaging · 4.2★ · Warehouse
• Ameri Pac · 4.6★ · Clinic
• Tenco Assemblies Inc · 4.4★ · Packaging company
• Sharp Packaging Solutions · 4.1★ · Pharmaceutical company
• Liquid Filling Solutions, Inc · 4.7★ · Manufacturer
• REV Copack · 4.7★ · Packaging company
• CSD Copackers · 4.5★ · Manufacturer

If by contract packagers you mean companies that take your finished product/components and handle filling, labeling, kitting, repacking, or retail-ready packaging, Pennsylvania has several strong options. The right choice depends heavily on the product category.

Notable Pennsylvania contract packagers

• Econo-Pak — Milford. A large-scale food co-packer with 240,000+ sq. ft., 200+ packaging machines, blending, bagging, cartoning, pouches, labeling, variety packs, and other dry-food capabilities. It lists SQF Level 3, USDA and FDA credentials.
  Best fit: high-volume dry foods, snacks, ingredients, powders, grains, candy.
• Millennium Packaging Service — Northeastern PA. Offers primary and secondary co-packing, flexible and rigid packaging, pouches, tubs, cups, shrink wrapping, bundling, kitting and fulfillment. Penn State's co-packer directory also lists its SQF, FDA, organic and kosher capabilities.
  Best fit: food, snacks, confectionery and consumer products requiring multiple packaging formats.
• PakSafe Industries — Philadelphia. Focuses on contract packaging, hand assembly, retail-ready pack-outs, palletizing, fulfillment and distribution. It also describes significant warehouse/assembly capacity and ISO 9001-based quality systems.
  Best fit: multi-component products, kits, consumer goods, fulfillment-heavy programs.
• ProStar Packaging — Reading. Full-service contract packaging with capabilities including flow wrapping, blister cards, bagging, labeling, displays, club packs, kitting, shrink banding and fulfillment.
  Best fit: consumer products, promotional packs, retail displays and secondary packaging.
• Ameri Pac — Mechanicsburg. Contract packaging/fulfillment operation offering primary and secondary packaging, kitting, labeling/relabeling, repack/rework and fulfillment.
  Best fit: industrial/consumer products and programs needing packaging plus fulfillment.
• Tenco Assemblies — Morrisville. Established contract packager with cartoning, labeling, blister carding, shrink/value packs, kitting, displays and flow wrapping, with particular experience in OTC healthcare, personal care and household products.
  Best fit: OTC, healthcare, cosmetics, personal care and regulated consumer products.
• Sharp Packaging Solutions — Conshohocken. A pharmaceutical-focused contract packaging operation, particularly strong in high-volume blister packaging and GMP-regulated pharmaceutical packaging.
  Best fit: pharmaceuticals and regulated healthcare products.
• Liquid Filling Solutions — Audubon. Focuses on liquid-product contract manufacturing and packaging, including blending, filling, labeling and fulfillment.
  Best fit: liquid products requiring formulation/blending and filling.
• REV Copack — Pittston. Beverage co-packing and fulfillment operation with warehousing/3PL capabilities.
  Best fit: beverage brands that also need storage and distribution support.
• CSD Copackers — Scranton. Specializes in cold-fill bottling of non-alcoholic beverages, particularly carbonated beverages in glass bottles.
  Best fit: beverage startups and established beverage brands.

If this is for a food product

Penn State's updated co-packer directory is particularly useful because it identifies Pennsylvania companies by product category. It includes options for sauces, dressings, pickles, beverages, dry mixes, baked goods, meat products, frozen foods and more.

For example, Janus Food Group in Northumberland specializes in shelf-stable foods and Tetra Recart, while Select Juice in Lancaster offers beverage co-packing, custom formulations, HPP, cold/hot fill and multiple packaging formats.

One important distinction: "contract packaging" can mean very different things. A company filling a beverage, a pharmaceutical blister packager, and a company assembling retail kits are all technically co-packers but require completely different equipment and certifications.

If you tell me what product you're trying to package, approximate annual volume, packaging format (bottle/pouch/carton/etc.), and whether you need formulation/manufacturing or just packaging, I can narrow this to 3–5 Pennsylvania companies that are specifically suited to your project, including contact information and estimated fit.

Places ChatGPT showed

• Millennium Packaging Services · 3.1★ · Manufacturer
• Econo Pak · 4.1★ · Packaging company
• Kolmar USA · 4.9★ · Manufacturer
• Millennium packaging inc building 5 · 4.0★ · Manufacturer
• Power Line Packaging Inc · 3.1★ · Packaging company
• Tenco Assemblies Inc · 4.4★ · Packaging company
• PakSafe Industries · 4.4★ · Warehouse
• Liquid Filling Solutions, Inc · 4.7★ · Manufacturer
• REV Copack · 4.7★ · Packaging company
• CSD Copackers · 4.5★ · Manufacturer

If by “best” you mean the Pennsylvania contract packagers I’d put on a serious RFP shortlist for a consumer-products brand, I’d separate them by product type and scale rather than give a single ranking.

Strong Pennsylvania shortlist

• Millennium Packaging Services — Carbondale. A strong general CPG option for dry foods, snacks, confectionery and flexible/rigid packaging. It offers primary and secondary co-packing, retail displays, kitting, warehousing and logistics, with SQF/FDA/organic/kosher capabilities listed by Penn State.
• Econo Pak — Milford. Particularly interesting for dry food, snacks, powders and variety packs. It has 240,000+ sq. ft., 200 packaging machines, 800+ employees and says it works with both emerging brands and Fortune 500 companies. Its listed certifications include SQF Level 3, FDA, USDA and kosher.
• Kolmar USA — Olyphant. One to investigate for beauty, skincare, cosmetics and OTC/personal-care brands, especially if you need formulation + manufacturing + filling/packaging rather than merely secondary packing.
• Millennium Packaging Service Inc. — Taylor/Carbondale area. Worth considering for brands needing retail-ready packaging, flexible pouches, tubs, cups, multipacks, displays and fulfillment. Penn State specifically lists its SQF/FDA/organic/kosher certifications.
• Power Line Packaging Inc — Conshohocken. A good fit for liquid personal-care and household products, including blending/compounding plus filling and packaging.
• Tenco Assemblies Inc — Morrisville. More appropriate when your product is already manufactured and you need secondary/tertiary packaging—cartoning, labeling, blistering, shrink/value packs, kitting, POP displays and similar work.
• PakSafe Industries — Philadelphia. Focuses on contract packaging, assembly, retail-ready preparation, warehousing and fulfillment, making it worth considering for consumer products that need pack-outs/kitting rather than formulation or primary filling.
• Liquid Filling Solutions — Audubon. Particularly relevant to liquid consumer products where you want blending, filling, labeling and fulfillment under one roof.
• REV Copack — Pittston. Focused on beverage secondary packaging and fulfillment, with e-commerce/3PL capabilities that can be useful for emerging beverage brands.
• CSD Copackers — Scranton. A more specialized option for non-alcoholic beverages, particularly cold-fill bottling and glass bottles.

For food brands specifically

A few additional companies stand out depending on what you're making:

• Palace Foods in Reading — sauces, mixes and oils, with pilot batches through full production and retail-ready private-label packaging. The company says it has been doing specialty-food co-packing since 1988.
• Janus Food Group in Northumberland — particularly interesting for shelf-stable soups, sauces and broths and the Tetra Recart format; Penn State lists organic, kosher, gluten-free and USDA FSIS-inspected capabilities.
• Select Juice in Lancaster — beverages, functional beverages, bottles/pouches, HPP, cold-fill, hot-fill and HTST, with SQF and organic capabilities listed by Penn State.
• Castle Co-Packers in New Kensington — beverages including soft drinks, juices, sports/energy drinks and powdered drink mixes.

For personal care/bath & body, Made Natural in Middleburg is another interesting option if you're at small-to-mid-sized volumes: it advertises runs of 500–25,000 units, kitting, multipacks, labeling and retail prep, with a 20,000-sq.-ft. FDA-registered/ISO 22716 facility.

How I'd narrow it down

The key distinction is whether you need:

One important caveat: “best” depends heavily on your SKU, packaging format, annual volume, MOQ, certifications and whether you need formulation/primary manufacturing or only secondary packaging. Penn State explicitly notes that its co-packer directory isn't an endorsement and recommends independently verifying regulatory compliance and fit.

If you tell me what the consumer product is, approximate annual units, package format (bottle/pouch/jar/carton/etc.), and whether you're a startup or established brand, I can narrow this to 3–5 Pennsylvania co-packers that are the closest operational fit, including likely MOQ/scale considerations and contact links.

Places ChatGPT showed

• Sharp Packaging Solutions · 4.1★ · Pharmaceutical company
• Sharp Allentown · 3.5★ · Pharmaceutical company
• Sharp Allentown Building 4 · 3.7★ · Pharmaceutical company
• PCI Pharma Services · 2.6★ · Pharmaceutical company
• Almac Pharma Services · 4.8★ · Pharmaceutical company
• Patwell Pharmaceutical Solutions, LLC. · 5.0★ · Pharmaceutical company
• Ameri Pac · 4.6★ · Clinic
• Tenco Assemblies Inc · 4.4★ · Packaging company
• Ems Contract Packaging · 3.7★ · Manufacturer
• Fruh Packaging Inc. · 5.0★ · Packaging company
• HPC Medx · Medical equipment manufacturer
• Liquid Filling Solutions, Inc · 4.7★ · Manufacturer

Pennsylvania has a strong cluster of pharmaceutical and healthcare contract packagers. Rather than one universal “best,” the right choice depends heavily on whether you need commercial pharma packaging, clinical-trial packaging, OTC/consumer health, medical devices, or filling/assembly.

Here are the Pennsylvania companies I’d put on a serious RFQ shortlist:

How I'd segment the shortlist

For prescription pharmaceuticals and sophisticated GMP programs: Sharp, PCI Pharma Services and Almac are the companies I'd investigate first. Pennsylvania's pharmaceutical-packaging directory specifically identifies Sharp's Conshohocken operation for clinical supply-chain and contract packaging work, while PCI and Almac have substantial pharma/biotech packaging operations in the state.

For clinical-trial packaging: Patwell is particularly relevant because its offering extends beyond packaging into labeling, storage, logistics and trial closeout.

For OTC and consumer-health products: AmeriPac and Tenco are worth including. AmeriPac lists blister, polybagging, shrink wrapping, hand assembly and labeling, while Tenco offers blister carding, cartoning, flow wrapping, kitting and related OTC packaging.

For health/beauty products requiring filling as well as packaging: Ems and Liquid Filling Solutions are more relevant than a pure secondary-packaging company. Ems handles liquids, creams, pastes, gels, sticks and lotions, while LFS focuses on liquid blending, filling, labeling and fulfillment.

For medical devices: Fruh Packaging and HPC MedX deserve attention. Fruh is oriented toward regulated medical-device packaging and cleanroom operations, while HPC MedX's published scope includes contract manufacture, packaging and distribution of sterile and non-sterile medical devices.

One other interesting option is Medical Products Laboratories (MPL) in Philadelphia. It is more of a full-service contract manufacturer/CDMO than a standalone packager, but it handles pharmaceuticals, medical devices and dietary supplements and offers packaging/filling ranging from blisters and pouches to bottles, jars, tubes, syringes and aerosols.

If you tell me what product you're packaging (drug, supplement, OTC, cosmetic/health product, or medical device), dosage/form (tablet, capsule, liquid, cream, etc.), packaging format, and approximate annual volume, I can narrow this to 5–7 Pennsylvania companies that are the closest operational fit, including certifications, capabilities, location, and contact/RFQ links.

Places ChatGPT showed

• ProStar Packaging · 4.2★ · Warehouse
• Complete Hand Assembly · 5.0★ · Packaging company
• Tenco Assemblies Inc · 4.4★ · Packaging company
• Associated Production Services · 5.0★ · Association / Organization
• Associated Production Services Inc. · 4.7★ · Business management consultant
• PakSafe Industries · 4.4★ · Warehouse
• Crescent · 3.7★ · Packaging company
• Econo Pak · 4.1★ · Packaging company

If your priority is hands-on kitting plus retail/POP display assembly, rather than just conventional co-packing, I’d put these Pennsylvania firms on the shortlist:

The ones I'd investigate first

ProStar Packaging — Reading. Its published capabilities are unusually close to your specific requirement: POP display assembly, permanent display assembly, club-pack assembly, kitting, hand assembly, gift sets, promotional packs and QC/inspection. ProStar also describes handling a high-complexity retail display program involving 19 SKUs and 79 total items per display, which is a useful indication that it can handle more than simple carton packing.

Complete Hand Assembly — Philadelphia. A strong option if the work is labor-intensive or involves unusual hand assembly. It specifically advertises POP/POS displays, PDQ trays, endcaps, promotional displays, mixed-SKU displays and 3PL kitting. It also says it takes overflow work from other packaging operations.

Tenco Assemblies — Morrisville. Worth considering for consumer-facing products where the finished kit needs to go into a retail-ready format. Its capabilities include kit assembly, POP displays, cartoning, blister/flow/shrink packaging and inspection/repackaging.

Associated Production Services — Trevose/Philadelphia. Its stated capabilities include POP display assembly and fulfillment, cartoning, labeling, gluing, heat sealing, multipacks and general assembly, making it another good fit when the display build is only one part of a larger packaging program.

Crescent — Mechanicsburg. More attractive if you need the packaging operation integrated with warehousing/logistics. Its Pennsylvania operation lists custom assembly, club-store packaging and display-ready pallets.

One important distinction

If by "retail display assembly" you mean taking a corrugated/printed display, physically constructing it, loading multiple SKUs into it, securing it, and shipping it retail-ready, I'd focus particularly on ProStar, Complete Hand Assembly, Tenco, and APS. Their published capabilities most directly match that workflow.

If you tell me what you're putting into the displays, approximate annual volume, number of SKUs/components per display, and where in PA you'd prefer the plant to be, I can narrow this to 3–5 suppliers and compare their capabilities, certifications, minimums, and likely fit.

Places ChatGPT showed

• Econo Pak · 4.1★ · Packaging company
• ProStar Packaging · 4.2★ · Warehouse
• Tenco Assemblies Inc · 4.4★ · Packaging company
• Sharp Packaging Solutions · 4.1★ · Pharmaceutical company
• Kolmar USA · 4.9★ · Manufacturer
• Liquid Filling Solutions, Inc · 4.7★ · Manufacturer
• Millennium packaging inc building 5 · 4.0★ · Manufacturer
• Associated Production Services Inc. · 4.7★ · Business management consultant
• Almac Pharma Services · 4.8★ · Pharmaceutical company
• PCI Pharma Services · 2.6★ · Pharmaceutical company

If by contract packager you mean a company that takes your product/components and handles filling, labeling, kitting, assembly, repacking, or retail-ready packaging, Eastern Pennsylvania has several established options. I’d shortlist based on documented capabilities, longevity, certifications/quality systems, and fit for your product, rather than simply online star ratings.

• Econo Pak — Milford, PA. Established in 1981, with broad contract packaging and co-manufacturing capabilities, including dry foods, OTC products, personal care, powders, liquids, kitting and shrink wrapping. Thomasnet lists it among Eastern PA contract packagers.
• ProStar Packaging — Reading, PA. Established in 2006 and specifically described as SQF-certified for contract packaging, with flow wrapping, blister cards, labeling, club packs, variety packs, kitting, displays and fulfillment.
• Tenco Assemblies Inc — Morrisville, PA. Established in 1974; particularly relevant for consumer healthcare, pharmaceuticals, personal care and cosmetics. Capabilities include cartoning, blister carding, labeling, shrink wrapping, kitting and rework/redress.
• Sharp Packaging Solutions — Conshohocken, PA. A strong candidate for regulated pharmaceutical packaging, including blister packaging under GMP conditions. Sharp also has substantial pharmaceutical packaging operations elsewhere in Eastern PA.
• Kolmar USA — Olyphant, PA. Particularly suited to beauty, personal-care and OTC products, offering contract manufacturing and packaging. Its Pennsylvania operation is registered for OTC pharmaceutical and cosmetic manufacturing/packaging.
• Liquid Filling Solutions, Inc — Audubon, PA. Worth considering for liquids, particularly when you need blending, filling, labeling, kitting and fulfillment from one supplier. Thomasnet describes run sizes from roughly 100 to 1 million units.
• Millennium packaging inc building 5 — Taylor/Scranton area. A large Northeast PA operation offering contract packaging, co-packing and fulfillment, particularly appropriate for higher-volume CPG programs. Thomasnet lists its Carbondale operation as 100–199 employees and $25M–$49.9M estimated annual revenue.
• Associated Production Services Inc. — Philadelphia. A full-service contract packaging/assembly and warehousing provider, with kitting, labeling, bundling, POP displays and fulfillment among its services.

How I'd narrow it down

The right shortlist depends heavily on what you're packaging:

For example, Almac Pharma Services in Audubon and PCI Pharma Services in Philadelphia are much more specialized toward pharmaceutical/biotech supply and GMP packaging than a conventional consumer-goods co-packer.

One important caveat: “reliable” is difficult to establish from public reviews alone. Penn State Extension explicitly says its co-packer directory does not endorse individual companies and recommends verifying regulatory compliance and fit yourself.

If you tell me what product you're packaging, approximate annual volume, packaging format (bottle/pouch/carton/blister/etc.), and whether you need filling/manufacturing or just secondary packaging, I can narrow this to 3–5 Eastern PA companies that actually fit your project and compare their certifications, capabilities, minimum runs, and locations.

Places ChatGPT showed

• Crave, LLC · Food processing company
• TruFoodMfg · 3.1★ · Manufacturer
• Castle Co-Packers, LLC · 2.7★ · Manufacturer
• Achieva Pallets and Packaging · 5.0★ · Manufacturer
• Menasha Innovative Packaging · 4.2★ · Warehouse
• SDC Nutrition · 4.5★ · Manufacturer
• West Penn Oil Company · 5.0★ · Manufacturer
• CCT Manufacturing & Fulfillment Center · 5.0★ · Manufacturer
• Warren Industries Services · 4.4★ · Packaging company
• Keystone Processing & Packaging · 2.9★ · Transportation service
• Stello Foods, Inc. · 2.9★ · Food manufacturer
• Green Valley Packing Co · 4.8★ · Meat wholesaler

If by contract packagers you mean companies that will take your product and handle filling, packaging, labeling, kitting, repacking, and/or fulfillment, Western Pennsylvania has several credible options. I wouldn’t call one universally “best” without knowing the product, but these are the ones I’d put on a serious shortlist.

Western PA shortlist

• Crave, LLC — Verona, PA. Food co-packer specializing in jarred/bottled products such as sauces, pickles, salsa, dressings, jams and beverage mixes. Particularly relevant for specialty-food brands and smaller/early-stage runs.
• TruFoodMfg — Pittsburgh, PA. Large-scale food/snack contract manufacturer and co-manufacturer, particularly suited to bars, baked snacks, confectionery and other better-for-you snack products.
• Castle Co-Packers, LLC — Latrobe, PA. A beverage-focused co-packer with hot-fill/cold-fill bottling, including PET and glass formats and smaller-format shots.
• Achieva Pallets and Packaging — Bridgeville, PA. More oriented toward secondary contract packaging and assembly: labeling, shrink wrapping, bagging, repacking, packout, palletizing, warehousing and fulfillment.
• Menasha Innovative Packaging — Latrobe, PA. A substantial packaging operation offering assembly, repacking and related packaging/warehouse capabilities. Thomasnet also lists Menasha's Western PA operation for shrink wrapping, labeling, blister/skin packing, bagging, bundling, palletizing and fulfillment.
• SDC Nutrition — Imperial, PA. Worth considering if you're dealing with nutraceuticals/dietary supplements rather than conventional food.
• West Penn Oil Company — Warren, PA. A specialized contract blender/packager for non-food liquid products, particularly lubricants, automotive fluids, additives and industrial liquids. The company says it handles 100–50,000 gallon blending runs and containers from 2 oz. through 55-gallon drums.
• CCT Manufacturing & Fulfillment Center — New Castle, PA. More suited to contract assembly, packaging, labeling, POP displays and fulfillment than food manufacturing.
• Warren Industries Services — Meadville, PA. Packaging, fulfillment and multi-step contract packaging, potentially useful for industrial or consumer-product projects.
• Keystone Processing & Packaging — Belle Vernon, PA. Focuses on industrial/bulk-product packaging and logistics, including automated packaging and shipment to customers.

If it's a food product

I'd narrow the field considerably. Crave, TruFoodMfg, Castle Co-Packers, Stello Foods, and Green Valley Packing are among the more relevant Western PA-area names depending on what you're making. Stello Foods, Inc. is in Punxsutawney and offers co-manufacturing/private-label food production, while Green Valley Packing Co in Claysville focuses on meat processing and private-label/co-manufacturing. Penn State Extension also maintains a Pennsylvania co-packer directory, updated December 2025, while explicitly noting that it does not endorse individual companies.

One important distinction

If you're looking for primary contract packaging—e.g., “I give them bulk sauce/powder/liquid and they fill my bottles/pouches and apply my labels”—the list is different from secondary packaging/assembly—e.g., “I give them finished products and they put them into retail cartons, kits, displays or multipacks.”

If you tell me what product you're packaging, package format (bottle/pouch/carton/etc.), approximate annual volume, and whether you need filling/manufacturing or just secondary packaging, I can narrow this to 3–5 Western PA companies that are actually a fit, including capabilities, location, certifications and likely minimum-volume considerations.

Places ChatGPT showed

• Econo Pak · 4.1★ · Packaging company
• ProStar Packaging · 4.2★ · Warehouse
• Complete Hand Assembly · 5.0★ · Packaging company
• PakSafe Industries · 4.4★ · Warehouse
• Jillamy Packaging and Warehouse · 4.3★ · Warehouse
• Tenco Assemblies Inc · 4.4★ · Packaging company
• Ameri Pac · 4.6★ · Clinic
• REV Copack · 4.7★ · Packaging company

If by contract packagers you mean companies that can take on a project quickly and flex for holiday/seasonal surges, these Pennsylvania options stand out based on their published capabilities:

• Econo-Pak — Milford. A strong candidate for high-volume food packaging. Its 240,000+ sq. ft. facility has 200+ packaging machines, and the company explicitly advertises high-volume capacity, quick turnaround, and the ability to maintain production schedules across different volumes.
• ProStar Packaging — Reading. Full-service contract packaging/fulfillment with an emphasis on scaling labor and getting programs running quickly. Worth contacting for seasonal overflow or labor-intensive packaging.
• Complete Hand Assembly — Philadelphia. Particularly relevant for rush, overflow, kitting, hand assembly, shrink wrapping, multipacks, and retail-ready pack-outs. They say many projects turn around within a few business days and that rush work is often possible; they also specifically serve seasonal spikes and overflow from other packagers.
• PakSafe Industries — Philadelphia. Has substantial assembly/production and warehouse space and explicitly says it can rush products to market. Its capabilities include pack-outs, palletization, fulfillment and retail-ready packaging.
• Jillamy Packaging and Warehouse — Ivyland. A useful option when you need packaging combined with warehousing/logistics. Its published capabilities range from bench work through automation and are designed to accommodate seasonal peaks.
• Tenco Assemblies Inc — Morrisville. Focuses on secondary/tertiary packaging, rework and assembly, including consumer healthcare, personal care, cosmetics and household products. It may be a good fit for non-food seasonal programs.
• Ameri Pac — Mechanicsburg. Contract packaging and fulfillment covering kitting/assembly, labeling, repack/rework and related services—useful if the project requires both packaging and fulfillment.
• REV Copack — Pittston. More specialized toward beverages, with secondary beverage packaging plus fulfillment/warehousing capabilities.

If rush + seasonal volume are the priorities

I'd divide the shortlist this way:

Penn State Extension also maintains a Pennsylvania/regional co-packer directory, including companies such as Econo-Pak, Manna Foods, Millennium Packaging and others; it cautions that the directory isn't an endorsement, so capabilities and current capacity should be confirmed directly.

One important distinction: “can handle seasonal volume” doesn't necessarily mean they have open capacity for your upcoming peak. For a rush project, I'd send each candidate the same one-page RFQ with SKU count, units required, packaging format, component availability, ship-to location, required ship date, and normal vs. peak monthly volume and ask for confirmed capacity rather than just a capabilities statement.

Places ChatGPT showed

• Econo Pak · 4.1★ · Packaging company
• Palace Foods Inc · 3.4★ · Food court
• Power Line Packaging Inc · 3.1★ · Packaging company
• NoltPak · 4.8★ · Business to business service
• ProStar Packaging · 4.2★ · Warehouse
• Chem-Pak Inc. · 4.5★ · Chemical manufacturer
• Tenco Assemblies Inc · 4.4★ · Packaging company
• Complete Hand Assembly · 5.0★ · Packaging company
• FEAST food works · Manufacturer

If by “brands trust” you mean family/local ownership plus an established track record, credible quality systems, and evidence of serving other brands, I’d put these Pennsylvania companies on the shortlist. I’m not treating “trusted” as a formal ranking—there isn’t a reliable public metric for that.

• Econo Pak — Milford, PA
  A particularly substantial family-owned option. Econo-Pak says it was founded by the Wiebel family more than 40 years ago and remains family-owned and operated. Its 240,000+ sq. ft. facility handles dry foods, supplements and consumer products, with 200+ packaging machines and SQF Level 3 certification. It says its Milford facility serves some of the largest food brands in the world.
  Best fit: brands needing significant volume, automated packaging, blending, bagging, pouches, cartons, variety packs, etc.
• Palace Foods, Inc. — Reading, PA
  One of the clearest matches if you specifically want family-run and locally based. Palace says it has been family-run since 1988 and specializes in food co-packing/contract manufacturing, including sauces, Indian foods, ghee and other specialty products. It handles pilot quantities through full production.
  Best fit: sauces, condiments, Indian/specialty foods, ghee, hot/cold-fill products, brands wanting a smaller hands-on manufacturer.
• Power Line Packaging Inc — Conshohocken, PA
  Family-owned contract packaging/manufacturing with an emphasis on liquid filling, compounding/blending and packaging. Its capabilities are particularly relevant to personal-care and household products, with ISO 22716/FDA/GMP-oriented quality systems.
  Best fit: cosmetics, personal care, home care, liquids, creams and similar products.
• NoltPak — Quarryville, PA
  A family-owned operation specializing in single-serve coffee/K-Cup co-packing. NoltPak identifies Chad and Gary Nolt as the owners and says it serves established coffee and retail brands nationwide. Its facility is FDA-inspected and it offers Organic and Kosher capabilities.
  Best fit: coffee brands, hospitality coffee, K-Cups/single-serve products.
• Schafco Packaging Company — Ronks, PA
  A long-running family-owned contract packager descended from Schaefer Paint Company. The Schaefer family has operated the business for generations, and it now provides aerosol, liquid and paste filling plus specialty packaging.
  Best fit: industrial/consumer liquids, pastes, aerosols and specialty packaging.
• Chem-Pak — Pennsylvania
  Chem-Pak describes itself as a third-generation family-owned contract packager dating to 1966, with aerosol, liquid and specialty packaging, formulation/R&D and scalable production. It specifically cites long-term relationships with brands and nearly six decades of family ownership.
  Best fit: aerosols, liquids, specialty chemical/consumer products and brands needing formulation-to-packaging support.
• Tenco Assemblies Inc — Morrisville, PA
  Family-owned and focused primarily on secondary/tertiary packaging rather than filling the product itself. Capabilities include cartoning, labeling, blister cards, shrink/value packs, kitting, displays and flow wrapping.
  Best fit: OTC, personal care, cosmetics and household products that are already manufactured/filled and need final assembly or retail packaging.
• Complete Hand Assembly — Philadelphia, PA
  A genuinely local option operating in Philadelphia since 1991. It specializes in hand assembly, kitting, shrink wrapping, poly-bagging, multipacks and retail-ready pack-out, particularly for unusual, urgent or labor-intensive jobs.
  Best fit: smaller brands, specialty kits, displays, promotional packs and projects that don't fit automated high-volume lines.

A couple of others worth investigating

Manna Foods in Lebanon is a Pennsylvania co-packer focused on dry foods, snacks and candy; Penn State Extension also lists it among regional co-packers.

FEAST food works in Reading is another local food/beverage co-manufacturer with cooking plus hot- and cold-fill packaging capabilities. FEAST food works

If I were building a vendor shortlist

I'd separate them by product rather than simply choosing the biggest:

One important distinction: “family-owned” doesn't necessarily mean small. Econo-Pak, for example, combines family ownership with a very large operation, while Palace Foods is much more of a hands-on specialty food manufacturer.

If you tell me what product you're trying to package (food, beverage, supplement, cosmetics, household, industrial, etc.), approximate annual volume, and packaging format, I can narrow this to 5–7 Pennsylvania co-packers that are actually good fits, including ownership, certifications, MOQs, capabilities, and publicly identifiable brand/customer evidence.