| Dongjie Optical Technology (Suzhou) Co., Ltd | C700 |
| Fasten Group:Jiangsu Fasten Optical Communication Technology Co., LtdJiangsu Fasten Optical Cable Co., Ltd | C701 |
| Hangzhou Futong Communication Technology Co., Ltd | C702 |
| Hangzhou Tuolima Network Technologies Co., Ltd | C703 |
| Jiangsu Etern Co., Ltd | C704 |
| Jiangsu Hengtong Group:Hengtong Optic-Electric Co., LtdGuangdong Hengtong Optic-electronical Technology Co., LtdJiangsu Hengtong Smart Grids Co., LtdZhejiang Dongtong Optical Network and IOT Technology Co., Ltd | C705 |
| Jiangsu Tongguang Optical Fiber Cable Co., Ltd | C706 |
| LEONI Cable (China) Co., Ltd | C707 |
| Nanjing Huamai Technology Co., Ltd | C708 |
| Ningbo Geyida Cable Technology Co., Ltd | C709 |
| SDG group:Shenzhen SDG Information Co., LtdShenzhen SDGI Optical Network Technologies co., Ltd | C725 |
| Shanghai Qishen International Trade Co., Ltd | C712 |
| Shenzhen Wanbao Optical Fiber Communication Co., Ltd | C713 |
| Sichuan Huiyuan Optical Communications Co., Ltd | C714 |
| Suzhou Furukawa Power Optic Cable Co., Ltd | C715 |
| Suzhou Torres Optic-electric Technology Co., Ltd | C716 |
| Twentsche (Nanjing) Fibre Optics Ltd | C717 |
| XDK Communication Equipment (Huizhou) Ltd | C718 |
| Yangtze Optical Fibre and Cable group:Yangtze Optical Fibre and Cable Joint Stock Limited CompanyYangtze Optical Fibre and Cable (Shanghai) Company LtdYangtze Zhongli Optical Fibre and Cable (Jiangsu) Co., LtdSichuan Lefei Optoelectronic Technology Company LimitedEverpro Technology Company Limited | C719 |