| Shandong Alto Electrical Equipment Co., Ltd | 2018-02-01 | Spray Painted Bridge Frame, Color Steel Bridge Frame, Frp Cable Tray | 29000K CNY | 지원 |
| Langfang Wanbo Cable Tray Co., Ltd | 2014-03-19 | Spray Painted Bridge Frame, Cable Tray, Fireproof Tray Bridge | 10000K CNY | 미지원 |
| Yanggu Huatong Automation Equipment Co., Ltd | 2012-06-15 | Spray Painted Bridge Frame, Plc Cabinet, Galvanized Cable Tray | 100000K CNY | 지원 |
| Shandong Jiayuan Electrical Equipment Co., Ltd | 2016-06-07 | Spray Painted Bridge Frame, Aluminum Alloy Cable Tray, Cable Tray | 36000K CNY | 미지원 |
| Shandong Jiayang Electrical Equipment Co., Ltd | 2018-10-23 | Spray Painted Bridge Frame, Polymer Bridge Frame, Fiberglass Cable Tray | 51880K CNY | 지원 |
| Shandong Alto Sen Electrical Equipment Co., Ltd | 2021-12-14 | Spray Painted Bridge Frame, Hot Dip Galvanized Bridge Frame, Polymer Bridge Frame | 3000K CNY | 지원 |
| Shandong Xinming Electrical Equipment Co., Ltd | 2018-12-24 | Spray Painted Bridge Frame, Large Span Cable Tray, Cable Tray | 21000K CNY | 지원 |
| Shandong Xiangyu Electric Power Equipment Co., Ltd | 2018-11-22 | Spray Painted Bridge Frame, Large Span Cable Tray, Galvanized Cable Tray | 5000K CNY | 미지원 |
| Shandong Chengrui Electric Power Equipment Co., Ltd | 2022-11-17 | Spray Painted Bridge Frame, Color Steel Bridge Frame, Self-Locking Bridge Frame | 15000K CNY | 지원 |
| Shandong Jinhao Transportation Facilities Co., Ltd | 2018-03-20 | Spray Painted Bridge Frame, Traffic Monitoring Pole, Traffic Signal Pole | 3000K CNY | 미지원 |