| Yanggu Huatong Automation Equipment Co., Ltd | 2012-06-15 | Large Span Bridge Frame, Plc Cabinet, Galvanized Cable Tray | 100000K CNY | รองรับ |
| Hebei Xinda Technology Co., Ltd | 2020-07-06 | Large Span Bridge Frame, Frp Fan, Fiberglass Cable Tray | 10000K CNY | ไม่รองรับ |
| Langfang Wanbo Cable Tray Co., Ltd | 2014-03-19 | Large Span Bridge Frame, Cable Tray, Fireproof Tray Bridge | 10000K CNY | ไม่รองรับ |
| Hebei Yibao Composite Materials Co., Ltd | 2019-01-21 | Large Span Bridge Frame, Entangled Septic Tank, Anaerobic Reactor | 3000K CNY | ไม่รองรับ |
| Langfang Gaoxin Metal Products Co., Ltd | 2020-11-12 | Large Span Bridge Frame, Stainless Steel Cable Tray, Ladder-Type Cable Tray | 1000K CNY | รองรับ |
| Shandong Jiayang Electrical Equipment Co., Ltd | 2018-10-23 | Large Span Bridge Frame, Polymer Bridge Frame, Fiberglass Cable Tray | 51880K CNY | รองรับ |
| Langfang Senneng Energy Technology Co., Ltd | 2016-04-29 | Large Span Bridge Frame, Stainless Steel Cable Tray, Ladder-Type Cable Tray | 20000K CNY | รองรับ |
| Langfang Kelei Electrical Equipment Co., Ltd | 2017-02-14 | Large Span Bridge Frame, Cable Tray, Corrugated Bridge Frame | 10000K CNY | รองรับ |
| Shandong Chengrui Electric Power Equipment Co., Ltd | 2022-11-17 | Large Span Bridge Frame, Color Steel Bridge Frame, Self-Locking Bridge Frame | 15000K CNY | รองรับ |
| Zaoqiang Haoyang Machinery Manufacturing Co., Ltd | 2020-01-07 | Large Span Bridge Frame, Fiberglass Ladder Bridge, Zinc Aluminum Magnesium Maintenance Channel Board | 1000K CNY | รองรับ |