Nrhiav ib tus neeg muag khoom txhim khu kev qha rau koj daim ntawv thov casting thiab forging? Saib tsis muaj ntxiv dua li Hanspire, lub tuam txhab ua lag luam hauv kev lag luam. Nrog cov ntaub ntawv pov thawj ntawm kev xa cov khoom zoo
Kuv nyiam lawv ua raws li tus cwj pwm ntawm kev hwm thiab kev ntseeg, kev koom tes. Los ntawm kev sib nrig sib pab. Peb yeej-yeej kom paub txog ob txoj kev txhim kho.