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Continue to ChatKunming Fengjing Mining is a mining company based in the Yunnan province in the west of China. The company has been operating in copper mining for over 15 years at Dongchuan Copper Mine Field. Link: https://www.atlascopco.com/th-th/construction-equipment/resources/customer-stories/zero-emission-electric-portable-air-compressors-in-chinese-underground-mine