Located in the west suburb of Hangzhou City, BSJ Group is a professional manufacturer of roofing materials. The main products include: Waterproof underlayment, Asphalt shingles, Fiberglass mesh, EPE flooring underlayment and so on.

Covering a land area of 100,000 m² and a building area of 6000 m², our group owns advanced manufacturing equipment and strong technology power. Now we have formed an outstanding designing & manufacturing team composed of a few senior engineers and 800 professional workers. We are specialized in Waterproof materials for building and construction work including waterproof roofing underpayments; SBS asphalt membrane, APP asphalt membrane, waterproof non-woven membrane, waterproof breathable non-woven membrane and water proof paint. Under the development of our highly experienced researching engineers, we have obtained 3 patents for the waterproof field, and these patents have been applied to our products. We are supplying one of the largest American construction Corporations, and they have proved our products are complies with UL and ICC-ES.