... ,Aluminum,Brass Surface Nickel plating, zinc plating and chrome plating. oxidation Tolerance +/-0.02mm Thread NPT,BSP,M,GHT,UN. ... quality precision machiningservice .Equipped with over 120 sets of CNC machine and punching machines, 100 sets ofinstrument lathe,2 sets ... nozzles,sparyers.... Our dedication, plus the company's knowledge and experience,have resulted in satisfiedcustomers.We are proud that ...