ZheJiang Terasun air duct co.,ltd is a professional company which specially manufacture air duct and composite board, we are a leader in R&D new type environment friendly Energy saving building material and composite material.

our company is established in 1989, and we have independently researched and developed over ten new types of building material products?and have obtained 18 national patents(including 3 patents for invention) My company's R&D and technical ability keep ahead in the ...