Zhejiang Terasun Air Duct Co., Ltd. is a professional manufacturer, which is engaged in the manufacture of air ducts and composite boards. We are a leader in researching and developing new, environmentally friendly and energy-saving building materials and composite materials. Our company was established in 1998. We have independently researched and developed over ten new types of building materials and have obtained 18 national patents (including 3 patents for invention). Our R&D strength and technical abilities keep ahead in the world. Our company has been honored as "Zhejiang Province High-Tech Enterprise" and "Zhejiang Patent Model Enterprise". Our main products include Terasun composite boards, Terasun air ducts, and so on. Meanwhile, our company is also in charge of drafting two national standards for glass magnesium composite air ducts. All of our products are 100% asbestos-free and have passed the test held by National Building Material Quality Supervision and Inspection Center. Our products are energy-saving and environmentally friendly building materials advocated by our Nation. Some of our products were applied to Beijing Olympics in 2008 and Shanghai World EXPO in 2010.Terasun fully implements ISO9001 and ISO14000 standards, strictly controls the quality of our products and fully meets customers' requirements in terms of different applications. We aim to provide a variety of professional solutions to meet your building material needs.