... like DIN,JIS,NFE,USS,SAE BS and so on) of material(A2,A4,A3.....) Surface treatment ... line with the principle of customer first,concentrate on working hardware manufacturing,we look forward to work ... standards, specifications and materials (A2,A4,A3,Brass and so on),most of material is imported from South ... Korea USA and Japan and so on. QILE METAL has import-export licence , and ...