灯壳表面磷化处理,去除锈迹,灰尘,油污,形成强吸附力抗腐蚀的“磷化层”,有利於喷涂顏料粉末的吸附。

Phosphating the surface of the shell,remove the dust,oil stain and rust from the stock to forma layer of
phosphate which make the lamp surface easy to adsorb the painted color powder.