Chinese brand,CPWS,manufacturer of quick clamping precision chuck for electrode making,EDM spark erosion burning Sinking,wire electrical discharge machining,CPWS is alternative to EROWA ITS tooling,System 3R equivalent,widely used by tool die maker,plastic injection mould makers,CPWS offers at lower competitive price good quality,www.workholdingtool.com,www.erowa-system3r-edm.com,sara@workholdingtool.com, China Precision Workholding System Inc