Farashin TPA

Ana sanya ɓangarorin ƙarfe masu kyau a cikin sassauƙa mai sassauƙa sa'an nan kuma ana amfani da babban iskar gas ko matsi mai ruwa zuwa ga mold. Sa'an nan kuma an haɗa labarin da aka samu a cikin tanderun wuta wanda ke ƙara ƙarfin ɓangaren ta hanyar haɗa ƙwayoyin ƙarfe.