Yuav ua li cas los ua cov hlau sib xyaw rau cov tshuab ua lag luam
Yuav Ua Li Cas Los Ua Cov Khoom Siv Rau Kev Siv Tshuab Kev sib xyaw yog kev sib xyaw ntawm ob lossis ntau yam khoom, tsawg kawg yog ib qho yog hlau, tsim los txhim kho cov yam ntxwv tshwj xeeb xws li lub zog, qhov nyuaj, kev tiv thaiv corrosion, lossis thermal stability. Kev tsim cov khoom siv txhim khu kev qha, zoo yog ib kauj ruam tseem ceeb hauv kev lag luam tsim khoom siv tshuab. Tsab xov xwm no yuav tham txog ntau yam… Nyeem ntxiv