Sandblasting yog tag nrho cov txheej txheem ntawm kev tshem tawm thiab ua kom lub ntsej muag ntawm lub substrate siv cov xuab zeb nrawm. Cov pa roj compressed yog siv los ua lub zog tsav los tsim cov kab hluav taws xob nrawm nrawm kom nrawm cov khoom siv tshuaj tsuag (tooj liab ore xuab zeb, quartz xuab zeb, kub steel xuab zeb, hlau xuab zeb, Hainan Prov ...
nyeem ntxiv