Mabawuti okhala ndi mitu iwiri nthawi zambiri amafunikira chithandizo chapamwamba, ndipo pali mitundu yambiri yopangira ma bawuti, kuphatikiza ma electroplating, blackening, oxidation, phosphating, ndi mankhwala opaka ma sheet a zinki omwe si a electrolytic. Komabe, muyezo wadziko lonse wa GB901 wogwiritsa ntchito zomangira zapanyumba zapanyumba zokhala ndi mutu wapawiri wamagetsi amawerengera gawo lalikulu pakugwiritsa ntchito zomangira.