亚洲图片欧美一区_中文字幕免费一区_国产欧美一区二区三区网站 _久久一区二区三区国产精品_欧美韩国日本综合_国产片一区二区三区_国产精品另类一区_亚洲成国产人片在线观看_久久久亚洲精品一区二区三区_国产网站一区二区

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