TUS TSWV YIM PROFITOR RAU LUB CAIJ NTUJ NO
1. Cov khoom yuav tsum ua raws API Q1 & API 5CT kev tshuaj xyuas zoo.
2. Cov nplaim ntawm xov yog du tsis muaj xov tawg, impurity, swb, swb nrog cov yeeb nkab steel xov.
Sau koj cov lus ntawm no thiab xa rau peb