Taw qhia:
Kub dov steel coil siv rau kev tsim kho, nkoj tsim kev lag luam, roj av, tshuaj lom neeg kev lag luam, kev ua tsov ua rog thiab hluav taws xob, kev lag luam zaub mov thiab kev kho mob, boiler tshav kub exchanger, machinery thiab hardware teb, thiab lwm yam.