... Precision Engine Part 1.Material:Brass copper 2.Tolerance:0.01mm 3.Certification:ISO9001 4.Good Quality and Servise Company Capacity:1).Machining ... nickel plating, zinc plating, eletropolishing according to customer's requirements.4).Professional CNC equipment ,bright silver white color , high precison ... ESD225, ESD420 , ESD520HRCeramicZrO2, ESD CeramicCarbideCD 650 High Precision Engine Part