... control.we can guarantee any single parts must at least 5 inspection process before delivery. 4,Most Economic production process for ... cost saving. 5,Material recycle scheme for cost reduction. Production Equipments: 1,The ... threads gages with many sizes,NPT,NPTF,BSPP,BSPT,NH,M...5,projection meter 6, three-dimensional measuring machine (new)7, ...