yumbu roba tiyo yana hade da high alumina yumbura da kyau kwarai na halitta roba ta musamman tsari. Kyakkyawan aikin damping na roba na halitta zai iya taimakawa wajen cimma wasu juriya na tasiri, wanda zai hana fale-falen fale-falen fale-falen buraka a wuraren da ke da tasiri mai yawa, zai iya samun sakamako mafi girma fiye da fale-falen fale-falen yumbu waɗanda aka haɗa kai tsaye zuwa bututun ƙarfe. An haɗu da yumbu da aka yi da yumbura tare da abũbuwan amfãni na alumina ceramics da roba, suna da amfani don rage raguwa, farashin kulawa da kuma tsawaita rayuwar sabis na kayan aiki.