Ubufakazi bokuqhuma kwe-Shenhai
Imikhawulo yokuqhuma kwegesi ye-coke oven iyahluka phakathi 6% futhi 30%.
Emoyeni, umkhawulo ophansi wokuqhuma wegesi ye-coke oven 6%, futhi umkhawulo ophezulu uwukuthi 30%. Ukugxila ngezansi noma ngaphezulu kwalolu banga ngeke kubangele ukuqhuma emoyeni.