Coi Rubber Products, Inc. is a U.S.-based rubber manufacturing and distribution company headquartered in Diamond Bar, California, with operations and production capabilities extending into Asia, including China. Founded on a vision of engineering precision and service excellence, the company specializes in custom rubber molding, extrusion, and sealing solutions for the automotive, industrial, and OEM sectors. With over a decade of steady growth, Coi Rubber has evolved from a niche importer into a vertically integrated manufacturer offering full-spectrum rubber product design, prototyping, tooling, and mass production. The company’s strengths lie in its ability to combine domestic engineering expertise with global manufacturing efficiency, enabling competitive pricing without compromising quality or lead time. Coi Rubber’s product range includes: Automotive rubber components (gaskets, seals, mounts, bushings) Custom extrusions for doors, windows, and weatherproofing applications.

Control Solutions Design Inc. was established in March of 2007. The company was created to better service the industry, and offer products to customers at a value. The company supplies process controls across the United States. Control Solutions Design Inc. is in the business of selling process controls such as: temperature sensors, thermometers, RTD's, gauges, valves, controllers, etc. The industries they serve are: food, pharmaceutical, petro-chem, heat treat, water and sewage, and etc.