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Ningbo ZhongGao Seal Technology Co., Ltd. Which was specialized in research, production, sales, and distribution. Factory predecessor is located in Xiamen, Shenzhen, currently has over 9000 square meters of modern plant, with more than 300 employees, more than 40 senior technical staff . Our main products are: O-ring, X-ring, Y-ring, D-rings, rubber flat washer, ED rings, rubber strips, rubber ball, all kinds of skeleton oil seal, glyd ring and step seal, polyurethane oil seal, pneumatic seals and all kinds of rubber parts for the design according to customer request. more >>