| COIL LIMITED | Private company limited by shares | Dissolved |
| AUS COIL COMPANY LIMITED | Private company limited by shares | Live |
| COIL (CHINA) CO., LIMITED | | Live |
| ABC COIL ELECTRONIC LIMITED | Private company limited by shares | Live |
| ABC COIL ELECTRONICS HK LIMITED | Private company limited by shares | Live |
| HANA COIL (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| COIL DRAGON (HONG KONG) LIMITED | Private company limited by shares | Live |
| TOKYO COIL (HONG KONG) LIMITED | Private company limited by shares | Live |
| COIL MASTER (HONG KONG) LIMITED | Private company limited by shares | Live |
| COIL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| COIL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| COIL HOLDING INVESTMENT CO. LIMITED | Private company limited by shares | Live |
| CAL COIL MAGNETICS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| ZHONGSHAN YEXUNAN MOSQUITO COIL LIMITED | Private company limited by shares | Live |
| Ocean Coil Limited | Private company limited by shares | Live |
| HK QUANYI COIL SPRING METALS PRODUCT LIMITED | Private company limited by shares | Live |
| COIL SEVEN (ASIA) LIMITED | Private company limited by shares | Dissolved |
| Coil Shipping Limited | Private company limited by shares | Live |
| COIL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Smart Coil (HK) Technology Co. Limited | Private company limited by shares | Live |
| THAI LIN RADIO COIL MANUFACTORY LIMITED | Private company limited by shares | Live |
| SK Coil International Trade Co., Limited | | Live |
| WING FAT COIL COMPANY LIMITED | Private company limited by shares | Live |
| Coilank Group Limited | Private company limited by shares | Dissolved |
| Coilank International Limited | Private company limited by shares | Live |
| COILCRAFT ELECTRONICS (HK) LIMITED | Private company limited by shares | Dissolved |
| COILCRAFT HONG KONG SERVICE COMPANY LIMITED | Private company limited by shares | Dissolved |
| COILER TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Coilology Co., Limited | Private company limited by shares | Live |
| GERMANY COILOVE WOOD PRODUCTS LIMITED | Private company limited by shares | Live |
| COILS CHINA ELECTRONIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| COIL TECH COILS PRECISION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| COILS AUTOMOTIVE COMPONENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| C.T.C. COILS LIMITED | Private company limited by shares | Live |
| COILS ELECTRONIC CO., LIMITED | Private company limited by shares | Live |
| KAI YU ELECTRONIC COILS MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| B&T COILS ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| HI COILS ELECTRONICS CO., LIMITED | | Live |
| YOU SHENG COILS ELECTRONICS LIMITED | Private company limited by shares | Live |
| YOTO COILS ELECTRONICS (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| FERRITE COILS COMPANY LIMITED | Private company limited by shares | Dissolved |
| GENERAL COILS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG COILS LIMITED | Private company limited by shares | Dissolved |
| B & T COILS PRODUCTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOP-VIEW COILS PRODUCTS COMPANY LIMITED | Private company limited by shares | Live |
| COILS PROPERTY MANAGEMENT LIMITED | Private company limited by shares | Live |
| Coils Retail Limited | Private company limited by shares | Live |
| CHI SHING ELECTRONIC COILS LIMITED | Private company limited by shares | Dissolved |
| COILS VENTURE COMPANY LIMITED | Private company limited by shares | Live |
| COILSUN ENGINEERING LIMITED | Private company limited by shares | Live |