1.Type:End mill of PCB 2.Material: Tungsten 3.Specifications:Stronger Hardness, Abrasion Resistant,Corrosion Resistant Specifications:1. ... 149 4.0 Acceptable Finishing Machine S600, S500, G500 74 2.0 Acceptable Testing Machinery: Machine Name Brand & Model No. Quantity ... Easson 2D 1 3.0 Acceptable Production Flow: 1.Roughing 2.Finishing 3.Packing