Birta iyo birta sida Hunan Great Steel ee ganacsiga ugu weyn, soo saarista alaabta birta qaaliga ah iyo qiimo sare leh oo kobciya saddex qaybood oo wax soo saar ah, kuwaas oo kala ah birta kaarboon, birta aan fiicnayn iyo birta khaaska ah. birta birta ah, Dhuumaha birta lsaw, dahaarka, tuubada, tuubada dalool, qaybta bannaan, qalabka tuubooyinka iwm