Nanjing Mack Sealing Technology Co., Ltd. was established in 2001, the business scope includes: metal seal manufacturing; Metal seal sales; Manufacture of rubber products; Rubber products sales; Auto parts and accessories manufacturing; Auto parts retail; Sales of mechanical parts and spare parts; Hardware products retail; Metal material sales; Lubricating oil sales; Sales of high-performance sealing materials; Sales of chemical products (excluding licensed chemical products); Sales of electrical and mechanical equipment; Machinery and equipment sales; Technical service, technology development, technology consultation, technology exchange, technology transfer, technology dissemination.