Cov txheej txheem ntxuav cov khoom siv yog ib qho tseem ceeb heev. Nws yog feem ntau yog cais cov xuab zeb hauv pwm ntawm qhov casting. Peb cov neeg ua haujlwm tam sim no siv cov tshuab los ua haujlwm cov txheej txheem no. Ntawd yog, thaum cov hlau tsis xeb castings txias rau qee qhov hauv cov pwm xuab zeb, cov bolts, pouring riser rings, thiab lwm yam raug tshem tawm.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-11-2025