- Andrews Powdercoating
 - Chatsworth - Custom and semi-production powder coating. - Aptek Laboratories
- Valencia - Offers adhesives, encapsulants, and fabricated speciality products for military and space applications, among other uses.
- Chemat Technology, Inc.
- Northridge - Providers of sol-gel technology, fine chemicals, and equipment to process advanced materials.
- CoBase Inc.
- South Pasadena - Manufacturer and supplier of chemicals, metals, ferro and non-ferro alloys, and flanges.
- Costech Analytical Technologies, Inc.
- Valencia - Specialises in the manufacture and distributon of consumable products for combustion organic elemental analyzers.
- George Industries
- Specialising in multi-colour aluminium anodizing, powder coating, and metal finishes.
- GOLD COAST Ingredients, Inc.
- Commerce - Manufacturer of natural and artificial flavours in liquid, powder, or spray dried form. Custom formulation and kosher certification available upon request.
- J & R Industries, Inc.
- Wilmington - Manufacturers of electronic potting compounds, coatings, sealants and a wide array of other chemical products.
- Morgan Products
- Valencia - Gas, oil, and water treatment systems.
- Mutual Flavors
- Sells a variety of flavours for beverages, dairy products, bakery goods, prepared foods, functional foods, condiments, and more.
- Sunland Chemical and Research Corp.
- Provides custom blending of any liquid formulation and provides packaging from small bottles to bulk deliveries.
- Urethane Products Corporation
- Gardena - Manufactures polyurethane chemical systems and fabricated moulded products.
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