Ntau cov duab ua los ntawm cov tooj liab dawb lossis tooj liab alloys, nrog rau cov pas nrig, xov hlau, daim hlau, daim hlau, strips, hlab, foils, thiab lwm yam, tau sau npe ua cov khoom siv tooj liab.Cov txheej txheem ntawm cov khoom siv tooj liab muaj xws li dov, extrusion thiab kos duab.Cov txheej txheem ntawm daim hlau thiab strips ...
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