Yuav Tiv Thaiv Ib Leeg Zog Hnav

Feb 04, 2018 Tso lus

Kev tu ntawm kev tiv thaiv ib puag ncig lub hnab
1. qhov chaw ib puag ncig lub hnab hauv qhuav, hnub ci.
2. nws yog txwv tsis pub tiv tauj nrog corrosive tshuaj.
3. Ceev faj kom siv tes, tsis pub yoojyim yooj yim, ua kom lub neej piam sij ntawm tej chaw tiv thaiv ib puag ncig;
4. Ib lub hnab ib puag ncig feem ntau muaj ib qho tsis pom kev li ntawm 8 phaus.