ZMJ
郑煤机
Heavy Industry, Machinery & ChemicalsZhengzhou · Central (Henan · Hubei · Hunan)
Business focus
Heavy Industry, Machinery & Chemicals
Description
Zhengzhou Coal Mining Machinery Group (郑煤机, ZMJ) was founded in 1958 and is the world's largest developer and maker of hydraulic powered roof supports for mechanized coal mining, alongside an automotive components business. 2025 revenue reached 41.39 billion yuan, up 11.78% year-on-year. In October 2025 the group renamed itself ZCZL Industrial Technology Group; its shares trade in both Shenzhen and Hong Kong (HKG:0564).