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1?? Cold precision forging 2??Directly precision forging dimensional accuracy <0.07mm 3??Precision forged special-shaped parts and no cutting 4??ELectric conductivity>98%IACSv 5??Hardness>HB110, after silver plating surface hardness: HV140 6??High material utilization 7??Press line end hardness under HB70, Pluggable end hardness>HB110