Ningbo Rock Metal Product Co., Ltd was established in Ningbo, the historic site of sintered, casting structural components and mechanical seal components in China. The co***ny is a traditional family group of co***nies found by experts having experience in sintered metal and special ceramics of mechanical seal field for many years with variety co-operation, related manufacturing enterprises.
Rock started its production with these advanced powder products and thereafter in-house R&D and with continuous ef...
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