Zomangira za chipboard zimakhala ndi ulusi wakuya wowonjezera mphamvu yogwira kuti igwire ulusi wopyapyala komanso wakuthwa kuti uzitha kugwira kwambiri komanso kutulutsa pang'ono mu chipboard, bolodi la MDF kapena matabwa ofewa.
Kuperekedwa ndi CR3, CR6 Yellow Zinc / Zinc / Black Oxidize ndi ena.