Green Foam Insulation Material Co., Ltd is a professional manufacturer of Pre-insulated HVAC duct system and other thermal insulation materials, such as Polyurethane(PU)/PIR/Phenolic foam pre-insulated HVAC duct, Phenolic Foam Insulation Board, Phenolic Foam Pipe Insulation. Pre-insulated HVAC duct offers a high performance, lightweight , single installation and robust ductwork, which is an excellent alternative to traditional galvanized iron ductwork, and it is more and more popular all over the world. Greenfoam always takes the "Save Energy, Safe System" as the mission of our sustainable development. has grown as the best supplier and manufacturer of Pre-insulated Duct and Phenolic Foam Insulation materials in China, products are main sold to China mainland, Thailand, Sri Lanka, South Korea, Australia, Russia, Pakistan, Spain, Colombia, Dominica and other countries.