Tungsten steel slitting carbide discs, tseem hu ua tungsten steel ib leeg, feem ntau yog siv rau kev txiav tapes, ntawv, zaj duab xis, kub, nyiaj ntawv ci, tooj liab ntawv ci, aluminium ntawv ci, tapes thiab lwm yam khoom, thiab thaum kawg txiav cov khoom txiav los ntawm tag nrho cov khoom. Qhov loj thov los ntawm cov neeg siv khoom yog faib ...
Nyeem ntxiv 
