Founded in 2003, Tong San Yi Import & Export is professional in producing various kinds of anti-dust, waterproof, oil- and abrasion-proof, high temperature-resistant rubber seal rings, such as O-rings, spacers and other silicone items. Our products are widely used in automobiles, motorcycles, machinery, home appliances, electronics, toys, sports equipment and sanitary products. As an ISO 9001-certified company, we bring suitable solutions for our customers, with most professional technology support and rich experiences, meeting their quality and design requirements. About 80% of our products are sold to Europe, North America, Africa and the Middle East.