特 点：材质采用高级不锈钢,真空热处理后经深冷处理至硬度HRC50~55再进行研磨加工,因此本体不易变形。平行精度：0.003/100mm以内垂直精度：0.005/100mm以内Characteristics：Precision Vise of Stainless Steel for EDM, the material isstainless steel, have done vacuum harden treatment and deeply cold treatment to HRC50~55 before doing the grinding process, the essence is not easy to deformed.Parallelism：Within 0.003/100mmSquareness ：Within 0.005/100mm