美国久益采矿公司是一家全球性公司，生产销售各种先进的采煤设备及配套设备。
JOY mining company is a global company, manufacturing and selling different kind of advanced mining machines and the relevant equipments.
美国久益采矿公司是一家全球性公司，生产销售各种先进的采煤设备及配套设备。
JOY mining company is a global company, manufacturing and selling different kind of advanced mining machines and the relevant equipments.
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