Ikamva leglasi liyonyuka ngamandla kwakhona, iikhontrakthi ezili-1609 ukusukela ezantsi kwama-973 yuan/toni, ziphinda zibuyele kumphezulu wamva nje we-1060 yuan/toni, unyuke phantse nge-9%. Kwixesha eliphakathi, nangona kunjalo, eliza le-rebound ye-1609 izivumelwano ezingapheliyo, kamva kwi-930-930 yuan/toni yoluhlu lwe-oscillation yokunokwenzeka inkulu. I-sp...
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