燈殼表面磷化處理,去除銹跡,灰塵,油污,形成強吸附力抗腐蝕的“磷化層”,有利於噴涂顏料粉末的吸附,。

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.