HY Automotive Systems Manufactory was originally established to produce American auto parts in South Korea, China, and Germany. HY has already had 3 subsidiary plants in China, and now HY has become a leading manufacturer of automotive exhaust systems in China. HY was founded in 1992, located in Jinhua Industrial Area and Yongkang City industry park, Zhejiang Province, which is the famous hardware city of China. HY is a professional manufacturer of kinds of exhaust systems and OE products. Our main products include Mufflers, Catalytic Converters, Exhaust Manifolds (exhaust headers & turbo headers), Muffler Tips, Motor Cooling Fans, Plastic Products, and Hardware Accessories.