Welcome to Certified Thermoplastics
Providing precision profile extrusions of engineering thermoplastic resins, compounds and alloys since 1978.
Certified Thermoplastics was founded in 1978 by George Duncan, a chemical engineer and Air Force pilot who previously worked for Rogers Corporation, and Bard Parker. His son Robert took over in 2004 and most recently, in 2018, the company was acquired by Ducommun Incorporated. Ducommun (NYSE:DCO) was founded in 1849 and is the oldest continuously operating company in California. Ducommun has been a supplier to the aviation industry since planes first began flying, and Certified is proud to be a part of this great company.