Cov txheej txheem ntawm cov ntawv kub-dip galvanized feem ntau suav nrog: Thawj Daim Ntawv Npaj → pretreatment → kub-dip plating → tom qab kho → kev tshuaj xyuas cov khoom tiav, thiab lwm yam. Raws li kev cai yog feem ntau raws li txoj kev kho ua ntej

