sorting, tu, acid kho, kub melting, nruab nrab crushing, nplua sib tsoo, grading, hlau tshem tawm thiab lwm yam
cov txheej txheem, uas ua tau raws li qhov yuav tsum tau siv.
Quartz hmoov tsuas yog muab faib ua specifications. Vim nws siab dawb, tsis muaj impurities thiab cov ntsiab lus hlau tsawg, nws muaj ib tug
ntau yam kev siv.