Cov ntsiab lus hauv qab no yuav tsum tau them sai sai rau thaum casting xuab zeb pwm castings thiab casting molding: 1. Kev xaiv cov khoom siv: xaiv cov xuab zeb thiab cov ntaub ntawv pov thawj tsim nyog los xyuas kom meej tias lawv cov khoom ua tau raws li qhov yuav tsum tau ua thiab tuaj yeem ua tau raws li lub zog thiab qhov zoo ntawm qhov yuav tsum tau ua ntawm castings. 2. Tau...