Established in July 1994, it is located in Cixi Industrial Zone on the beautiful and fertile bank of Hangzhou Bay covering a floor area of 420,000m2 and a building area of 31,000m2. The company specializes in the development and production of HengsengTM sealing gaskets, e.g. spiral wound gaskets, serrated gaskets, corrugated complex gaskets, metal ring gaskets and non-asbestos gaskets and other sealing materials applied in the petroleum....