1. Kev siv cov kab sib chaws ua kom cov kab rov tav, hauv cov thawv PU sab hauv sab hauv, yuav ua tau kua qaub thiab alkali, hnav-resistant, tab sis kuj tiv thaiv kev ua hauj lwm hauv kev ua hauj lwm.
2. Lub taub ntses tsis muaj sab hauv sab hauv, tsim rau cov hlau pob los yog cov khoom siv hlau, vim hais tias yuav ua rau lub zog quab yuam, ua kom muaj kev loj dua.
3. Cov hluav taws xob yuav tsum tau hloov raws li, nrog txoj kab nqes tsim nyog, yog li cov khoom siv tau yooj yim.
4. Rau qhov sib tsoo tshuab, qhov yooj yim, yooj yim ua qauv, tsim rau kev ua, thiab cov khoom lag luam zoo tshaj plaws.
5. Lub tshuab no haum rau forging, casting, foundry work yuav tsum muaj zog txiav quab yuam.
6. Lub luag haujlwm yuav tsum tau mus rau hauv cov yeeb yam dub, Blackhead thiab nplua nplua, sib tsho zoo nkauj.
7. Cov suab me me, yooj yim rau kev khiav lag luam thiab lwm yam zoo.
Cov Ntaus Cov Tshuab Chev Sib Tsoo
Dec 20, 2017
Tso lus