My company has been an OEM supplier in China with couple of decades history, specializing in rubber sealing products, such as engine valve stem seal, oil pan gasket, cylinder cover gasket, O-ring, cylinder liner sealing ring, special-shaped seal, bonded seal, and so on. The core customers include Weichai Power, SINOTRUK, FAW and other famous local vehicle manufacturer. Http://www. xindingtong. com