We are Fujian COS Plastic & Rubber Co., Ltd. A leading oil seal manufacturer in China.We are a manufacturer specialist in rubber products for about 15years.We adjust our step ,indraught the advanced producing technics and high precision equipment to improve our quality with the opportunity and challenge brought by WTO.The quality of us is in the advance in our field. We have confidence COS can be your best supplier, your best OEM in the rubber products.