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We are the leading seal manufacturer in China. Our seal production include O-ring, X-ring, back up ring, U-ring, V-ring, oil seal, bonded seal, and so on. Our factory is located in Ningbo city and have more than 200 worker who have many years experience in the seal production. We have our own mold factory to reduce the cost for our client. Also, all of our material are bought from DuPont, Bayer, Dow Coirning, it assure our seal in high quality. Our most advantage product is the O ring, we have the all the series mold for the standard size of AS-568,BS1516,V.S.P.G.For the non-standard size, all the mould charge will be free. We have the technical department and feel happy to solve your seal problem. We hope to establish the good business relation with the client all over world.