Anodizing
Black Oxide
zinc plating
Gold plating
Chromes
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CHROMATING 无色鉻酸瞙
Chromating
Chromating on Zinc- clear, blue , yellow and black ASTM-B633 type III
鋅无色鉻酸瞙，蓝,黄及黑色–ASTM-B6331类 I
Chromating on Aluminium alloys – MIL-DEL -5541F Class 1A
铝无色鉻酸瞙—–MIL-DTL-5541F 級1A
Chromating on Aluminium alloys – MIL-DEL -5541F Class 3A
铝无色鉻酸瞙—–MIL-DTL-5541F 級3A
