
Hangzhou Biyou Building Material Technology limited is International sales office, the factory based on Jiashan county jiaxing city, zhejiang province China. We specialized in manufacture a wide range of weather sealing system and passive fire products. Our products are idea for fire resistance, insulation, smoke sealing and acoustic suppression. We has a group of professional R & D, high -quality products and efficient after-sales service. We have achieved IS9000 certificate, BS/EN/UL Certificate ...