| Shandong Zhongtan Intelligent Equipment Co., Ltd | 2022-03-01 | Rail Polishing Machine, Steel Products, Explosion-Proof Electrical Equipment | 10000K CNY | รองรับ |
| Middling coal Industry and Mining Materials Group Co., Ltd | 2001-04-23 | Rail Polishing Machine, Large-Scale Equipment, Spraying Equipment | 100000K CNY | ไม่รองรับ |
| Shandong Huayu Heavy Industry Machinery Co., Ltd | 2020-12-17 | Rail Polishing Machine, Mining Conveying Equipment Accessories, Mining Instruments And Meters | 5000K CNY | ไม่รองรับ |
| Shandong Pumei Intelligent Equipment Co., Ltd | 2020-04-20 | Rail Polishing Machine, Rescue Products, Supporting Equipment | 3000K CNY | รองรับ |
| Jining Wanda Machinery Equipment Co., Ltd | 2015-11-20 | Rail Polishing Machine, Anchor Drilling Rig, Waterproof And Airtight Door | 500K CNY | รองรับ |
| Jining Huaguan Safety Equipment Co., Ltd | 2023-06-07 | Rail Polishing Machine, General Equipment Manufacturing, Lifting Equipment | 100K CNY | ไม่รองรับ |
| Jining Dingdong Machinery Equipment Co., Ltd | 2018-01-23 | Rail Polishing Machine, Mining Machinery, Excavator Attachments | 3000K CNY | ไม่รองรับ |
| Zhongyun Intelligent Machinery Group Co., Ltd | 2017-03-02 | Rail Polishing Machine, Mechanical Hardware, Petroleum Equipment | 50000K CNY | รองรับ |
| Shandong Zhong'an Intelligent Equipment Co., Ltd | 2019-11-01 | Rail Polishing Machine, Temporary Support For Tunneling Machine, Anchor Rod Dynamometer | 3200K CNY | รองรับ |
| Shandong Likuang Heavy Industry Machinery Co., Ltd | 2023-11-03 | Rail Polishing Machine, Instrumentation And Meters, Spraying Equipment | 30000K CNY | รองรับ |