... ,male,seal ring. We also supply seperate parts such as: nut,liner,male,blind cap ... ,check valve,diaphragm valve,safety valve,union parts,ferrule,end cap,nut,clamp,elbow,tee ... including 5 senior engineers.Device: YODSN combined CNC turning processing, CNC milling center, plastic injection, Die casting, ... devices from abroad such as Japan Mazak brand CNC machine tools, Full automatic cutting and production ...