Khiav Led Sawb Teeb

Khoom nta:

1. Lub sijhawm dhau mus, lawv yuav ua rau muaj kev txuag nyiaj ntau vim tias lawv siv zog tsawg dua li cov kev xaiv teeb pom kev zoo. Tsis tas li ntawd, lawv tsis muaj cov khoom phom sij xws li mercury thiab tsis tso tawm cov hluav taws xob ultraviolet, ua rau lawv muaj kev nyab xeeb dua rau ib puag ncig thiab kev noj qab haus huv ntawm pej xeem.
2. Lawv xav tau kev hloov pauv tsis tu ncua vim lawv kav ntev dua qhov muag teev. Qhov no txo ​​qis cov khib nyiab uas xaus rau hauv qhov chaw pov tseg ntxiv rau kev txuag nyiaj ntawm cov nqi hloov pauv.

KhoomTshwj xeeb:

Cov duab ntxaws:

Kev siv