- Canfab
 - Oshawa - Manufacturer of specialty composite containers. - R.A. Miller & Company, Inc.
- Thornhill - Consultants to packagers of foods, beverages, lubricants, and chemicals, and to their material suppliers.
- Quantum Scientific, Inc.
- Mississauga - Specializes in the design and fabrication of transit cases and shipping containers for both commercial and military applications.
- Colt-Pak
- Toronto - Offers custom cartons, boxes and packaging supplies.
- ISA Technologies Inc.
- Mississauga - EPS, Polystyrene machine manufacturer.
- Glopak
- Markham - Manufactures packaging equipment and supplies.
- Discovery Packaging
- Caledon - Offers flexible packaging products, graphic design, extruded films, printing, and bag converting.
- Spray-Pak
- Mississauga - A contract aerosol packaging company.
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