Precision hydraulic fitting with plating zinc,We fabricate metal parts over 5.000.000pcs ... 1,100 SET OF CNC machines for high output with quick delivery 2,Skilled and rich experienced staff. ... bolishing machines,Welding machine and annealing machine.7,Salt spray test machine8,2 sets of Assembly line About ... ,Depth gages.4, thread gages,ring threads gages with many sizes,NPT,NPTF,BSPP,BSPT,NH,M...5 ...