... sleeve code ESV 2.material:JIS SKD61 3.Hardness -surface:HV900~, 4.Core:HRC35, 5.concentricity below 0.03 Ejector sleeve taiwan ... sleeve1.Ejector sleeve code ESV2.material:JIS SKD613.Hardness -surface:HV900~,4.Core:HRC35,5.concentricity below 0.03 Ejector sleeve taiwan ... injection mold part1.material:JIS SKD61,Hardness -surface:HV900~,Core:HRC35,concentricity≤0.032.H:9/10/11/13/15 ...