Zomwe zili m'munsizi zimapangidwa ndi mbale zazitsulo zozizira kwambiri zozizira kuchokera ku Wuhan Iron and Steel Co., Ltd mndandanda wa njira kuphatikizapo mankhwala kutentha nayitrogeni, kutentha kutentha ndi mankhwala odana ndi dzimbiri Mlingo wotsegulira ndi 30% -40% kwa 2.0 ndi pansipa anawunikiridwa kuti atsimikizire khalidwe.