| Shandong Huayu Heavy Industry Machinery Co., Ltd | 2020-12-17 | Mining Frequency Converter, Mining Conveying Equipment Accessories, Mining Instruments And Meters | 5000K CNY | Non pris en charge |
| Tianjin Cable Factory Rubber Cable Factory | 1993-08-16 | Mining Frequency Converter, Large Logarithmic Communication Cable, Railway Signal Cable | 36180K CNY | Non pris en charge |
| Shandong Zhongtan Intelligent Equipment Co., Ltd | 2022-03-01 | Mining Frequency Converter, Steel Products, Explosion-Proof Electrical Equipment | 10000K CNY | Pris en charge |
| Jining Huakuang Machinery Equipment Co., Ltd | 2014-03-18 | Mining Frequency Converter, Non Destructive Testing Equipment, Portable Gas Sampler | 3000K CNY | Pris en charge |
| Shandong Lu Coal Heavy Industry Co., Ltd | 2020-03-11 | Mining Frequency Converter, Hoist Winch, Return Column Winch | 60000K CNY | Pris en charge |
| Shandong Zhongzhong Intelligent Technology Co., Ltd | 2022-03-10 | Mining Frequency Converter, Instrumentation And Meters, Chemical Industry | 10000K CNY | Non pris en charge |
| Shandong Huakuang High tech Development Co., Ltd | 2024-02-29 | Mining Frequency Converter, Lifting Equipment, Road Machinery | 3000K CNY | Pris en charge |
| Shanghai Cerna Power Testing Equipment Co., Ltd | 2005-11-15 | Mining Frequency Converter, Scraper Deceleration Test Bench, Gearbox Simulation Test Bench | 500K CNY | Non pris en charge |
| Huakuang Heavy Industry Co., Ltd. First Branch | 2023-02-10 | Mining Frequency Converter, Lifting Equipment, Steel Products | - | Pris en charge |
| Zhejiang Chang'an Variable Frequency Technology Co., Ltd | 2019-12-31 | Mining Frequency Converter, Air Compressor Frequency Converter, Frequency Converter | 30010K CNY | Non pris en charge |