And the latest development of the red phosphating, special no residue phosphating, no free of nitrites promoting agents including sulfuric acid amine phosphating applied for patent.

并对最新开发的红色磷化、专用无渣磷化、无含亚硝酸盐促进剂(含硫酸羟胺)磷化申请了专利。

youdao

And the latest development of the red phosphating, special no residue phosphating, no free of nitrites promoting agents including sulfuric acid amine phosphating applied for patent.

并对最新开发的红色磷化、专用无渣磷化、无含亚硝酸盐促进剂(含硫酸羟胺)磷化申请了专利。

youdao