Kev Lag Luam Ntau Lawm

Puv-v muab kev qhia dawb thiab kev daws teeb meem rau kev lag luam xws li kiv cua, steel tawb, voj voog qhov tsis siv neeg ntsaws vuam, thiab corrugated transformers, uas tau siv los ntawm ntau pua lub tuam txhab thiab tau txais kev tshuaj xyuas zoo heev. Cov khoom lag luam tsis yog tsuas yog hauv tebchaws thiab thoob ntiaj teb, tab sis kuj tseem xa tawm mus rau ntau thaj chaw xws li Europe, Amelikas, Africa, thiab South America, tau txais kev lees paub los ntawm cov neeg siv khoom hauv tsev thiab txawv teb chaws.