Ningbo Vulcan Mechanical seals Manufacturing Co.Ltd (NBV) was established in 1998, and is an innovative national hi-tech enterprise,integrating design development production sales and after-sell service.We specialize in manufacturing engineering ceramics,SIC/SSIC bushing and bearing, sealing rings, nozzle and wave spring. NBV adopted western management mode developed and implemented advanced IT systems, such as ERP, PDM and CRM order processing and production tracing which makes our production ...