1 lass Ikirahure: ibikoresho by'ibanze by'ikirahure kibase, ikirahure kireremba, ibicuruzwa by'ibirahure (amabati,
amacupa yikirahure, ibirahuri, nibindi), ikirahure cya optique, fibre yikirahure, ibikoresho byikirahure, ikirahure kiyobora, imyenda yikirahure hamwe na ray
ikirahuri kidasanzwe
2 、 Ceramics and refractories: ibikoresho fatizo bya farashi, amatafari maremare ya silika, amatafari asanzwe ya silika na karbide ya silicon kumatanura.3 ruction Kubaka: ibikoresho bya beto, simaitima, ibikoresho byo kubaka umuhanda, ibihimbano
marble, sima ibikoresho byo kugenzura umutungo wumubiri (ni ukuvuga umusenyi usanzwe wa sima), nibindi