IFAN cov khoom siv tooj dag siv 57-3 tooj dag raw cov ntaub ntawv, tooj dag cov ntsiab lus tsis tsawg dua 57 feem pua, cov ntsiab lus txhuas yog tsawg dua 3 feem pua, los ntawm kev kub kub forging, deburring, CNC waterwheel xov, thiab lwm cov kauj ruam los ua cov khoom tiav ib qho los ntawm ib qho, tsom rau qhov zoo. Txais tos kom nug :)
