Hluav Taws Xob Muaj Qib Cov Quav Muaj Pem Xiam Phom

Hluav Taws Xob Muaj Qib Cov Quav Muaj Pem Xiam Phom

Cov tshuaj muaj zog, raws li cov khoom siv tshuaj yooj yim, yog siv hauv kev lag luam hluav taws xob. Cov tshuaj paug tshuaj muaj zog oxidizing. Cov nplaum tsis kam tsim tawm hauv cov txheej txheem ntawm cov khoom hluav taws xob muaj peev xwm muab tshem tawm los ntawm kev muaj zog oxidizing khoom ntawm potassium permanganate thiaj li ...

Tsham tam sim no