Chemical reagent of Bao Xian color, small sample and reagent consumption, prevent and reduce pollution two.

化学试剂包显色，样品和试剂用量少，防止并减少了二次污染。

youdao

Chemical reagent of Bao Xian color, small sample and reagent consumption, prevent and reduce pollution two.

化学试剂包显色，样品和试剂用量少，防止并减少了二次污染。

youdao