专业是美制螺丝(有美制不锈钢杯头2#-56~~~10#-32.美制不锈钢平杯2#-56~~~10#-32.美制不锈钢元杯2#-56~~10#-32 ,美制不锈钢元机丝2#-56~~10#-32 ,美制不锈钢平机丝2#-56~~10#-32,美制合金钢元杯2#-56~~10#-32,美制合金钢平杯2#-56~~10#-32,美制合金钢杯头2#-56~~10#-32,美制合金钢喉塞1/8"-27~~~~1-1/2",美制合金钢机米2#-56~~10#-32,等等............
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