We are a manufacture of mechanical seals ,marine stern shaft seals equip ,metal hose and expansion joint in China ,and the company was established in 1991 .Our website is http://www.zjg-huaqing.com ,The products have been awarded “gold medal of International Invention Patent of new product and new technology in 1991 “,and was continuous prized as qualified products by the authoritative organization of national quality surveillance . Service first ,we also would like to provide samples according to customer’ needs .