W.L. Gore & Associates is an American private company founded on January 1, 1958 and headquartered in Newark, Delaware. The company mainly uses fluoropolymers (Gore has a unique polymer material-polytetrafluoroethylene) as the basis for development to develop various products, involving textiles, electronics, industry, medical, aviation and other fields, including guitar strings , space cables, artificial blood vessels, GORE-TEX fabrics and other products.

DuPont is the second largest chemical company in the United States and is now a listed company on the New York Stock Exchange. DuPont's history can be traced back to DuPont or Pharmaceuticals, founded in 1802. DuPont mainly produces plastics and rubber, including neoprene, nylon, plexiglass, etc. In the 2013 Fortune Global 500 ranking, DuPont ranked 267th.