black trivalent chromium electro-plating  三价黑铬电镀

Black Chromium  黑铬

gun black plating  枪色电镀

chromium plating  铬镀; 镀铬; 铬钢; 镀层; 镀铬层; 电镀铬; 电镀铬废液; 铬电镀

Chromium Plating Bath  三价铬电镀; 镀铬浴; 镀铬液

chromium plating coating  镀铬层

chromium plating from trivalent chromium electrolyte  三价铬电解液镀铬

CHROMIUM PLATING PROCESS  镀铬工艺

Chromium Plating Solution  镀铬溶液

Chromium Plating Spent Solution  电镀铬废液

chromium plating steel plate  镀铬钢板

Chromium Plating Waste Water  镀铬废水

chromium plating with Cr (Ⅲ) bath  三价铬电镀

chromium-plating  镀铬

chromium-plating (chrome plating)  镀铬

chromium-plating coating  镀铬层

chromium-plating layer  镀铬层

chromium-plating solution  镀铬溶液

chromium-plating with Cr3+  三价铬电镀