Meltblown cov khoom siv tswj thiab tu

1. Cov khoom siv raw yuav tsum tau muab sib dhos kom zoo thiab ua kom zoo.

2. Tag nrho cov txij nkawm, xoob qhov chaw thiab lwm yam cuab yeej yuav tsum tau sau thiab khaws cia rau hauv lub thawv cuab yeej.

3. Nws yog nruj me ntsis txwv tsis pub tso cov khoom siv hluav taws xob thiab cov khoom tawg yooj yim rau ntawm cov khoom siv.

4. Cov khoom siv yuav tsum tau ua kom huv si.

5. Txhua qhov chaw ntawm cov khoom siv yuav tsum tau oiled thiab xeb tsis tu ncua.

6. Ua ntej qhib cov khoom siv, cov khoom sib cuag ntawm cov kab ntau lawm yuav tsum tau muab ntxuav kom huv si hauv lub sijhawm kom paub tseeb tias nws yog huv si thiab tsis muaj khib nyiab.