Defu was established in 1999. It was originally founded by Dyneon LLC of the United States and Dyneon GmbH of Germany. It is the authorized general agent of Taiwan's full range of fluoropolymers (Fluoropolymers). 20 years of research and development of fluoropolymer materials, supplying products including high-performance fluoropolymer products, polytetrafluoroethylene raw materials (PTFE/mPTFE), fluoroplastics (PFA/FEP/PVDF), and fluorocarbon rubber (FKM/FFKM) ;Application fields include chemical industry, semiconductor, automobile, electronics, machinery, construction and renewable energy, etc.