1. Iyakar aikace-aikacen #Coal #Tar #Pitch shine samarwa da kera darajar carbon. Matsayin graphitization na carbon a cikin farar kwal ɗin kwal yana da girma, don haka ana iya amfani dashi azaman manne da lantarki na ƙarfe. A wannan yanayin, akwai nau'o'in nau'i da yawa da kuma fa'idodi masu yawa. 2. Don kayan halitta, gabaɗaya ana haɗa shi da man fetur ko sanya shi cikin slurry don aikace-aikacen, wanda zai iya yin tasiri na maye gurbin man fetur zuwa wani matsayi. 3. Ta hanyar warware abubuwan da ba su da ruwa da aka yi amfani da su a cikin ginin gine-gine da kayan aikin bututu bayan samarwa da sarrafawa. Epoxy kwal tar farar ginin rufin shine wanda aka fi amfani dashi.
