Chitsulo chopangidwa ndi chitsulo ndi mbale yonyezimira yachitsulo yokhala ndi dip yotentha kapena zokutira zama elekitirodi pamwamba, zomwe zimagwiritsidwa ntchito kwambiri pomanga, zida zapakhomo, magalimoto ndi zombo, kupanga zidebe, mafakitale amagetsi, etc.
Kukula kwa kupanga dip dip galvanizing ku China kwatsalira m'mbuyo.Kuchokera m'ma 1950 mpaka 1960, zida 13 zopangira zitsulo zotentha zachitsulo chimodzi zidamangidwa motsatizana, ndi mphamvu ya 100000 t / A. phindu lazachuma ndi zina zotero, zayimitsidwa ndikusinthidwa kupanga.Kuyambira chakumapeto kwa zaka za m'ma 1970, China idayamba kupanga magawo akulu akulu opaka mafuta otenthetsera.