Copper plate ndi chinthu chochepa ngati mbale chopangidwa ndi mkuwa weniweni.Ili ndi madulidwe abwino kwambiri amagetsi, matenthedwe matenthedwe komanso kukana dzimbiri.Mkuwa mbale nthawi zambiri amakhala lathyathyathya pamwamba ndi mphamvu mkulu, ndipo angagwiritsidwe ntchito popanga zipangizo zamagetsi, mbale kutentha exchangers, zokongoletsa, etc. Amagwiritsidwanso ntchito kwambiri popanga zida zopangira magetsi, mbali zamagalimoto, ndi zomangira, ndipo ali osiyanasiyana ntchito.
