| J.E.C. INDUSTRIAL LIMITED | Private company limited by shares | Live |
| J.E.C. TECHNOLOGIES (H.K.) LIMITED | Private company limited by shares | Dissolved |
| JECA LIMITED | Private company limited by shares | Live |
| JECA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| JECA TECHNOLOGY LIMITED | Private company limited by shares | Live |
| M.Y. JECATOS LIMITED | Private company limited by shares | Live |
| AMERICAN JECAY GARMENT MANUFACTURING GROUP LIMITED | Private company limited by shares | Live |
| JECC TRADING CO., LIMITED | Private company limited by shares | Live |
| JECCO ENTERPRISE LIMITED | Private company limited by shares | Live |
| JECCON INDUSTRY (CHINA) CO., LIMITED | Private company limited by shares | Live |
| JECDA TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| JECEDE LIMITED | Private company limited by shares | Dissolved |
| JECET INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| JECFLY SUPPLY LIMITED | Private company limited by shares | Live |
| SHENZHEN JECH CO., LIMITED | Private company limited by shares | Live |
| JECHRI LIMITED | Private company limited by shares | Live |
| HK Jecintta Technology Co., Limited | Private company limited by shares | Live |
| JECK Limited | Private company limited by shares | Live |
| Jeck Contact Center Limited | Private company limited by shares | Live |
| JECK Fitness Limited | Private company limited by shares | Live |
| JECKCO LIMITED | Private company limited by shares | Dissolved |
| JECKFILL MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| JECKING FOOTWEAR LIMITED | Private company limited by shares | Dissolved |
| JECKING MARITIME LIMITED | Private company limited by shares | Dissolved |
| Jeckminding Company Limited | | Live |
| JECKO LIMITED | Private company limited by shares | Dissolved |
| Jecko & Company Limited | Private company limited by shares | Dissolved |
| JECKO-STYLE LIMITED | Private company limited by shares | Live |
| JECKSON ELECTRIC COMPANY LIMITED | Private company limited by shares | Live |
| JECKSON ELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| JECKSON SERVICE LIMITED | Private company limited by shares | Dissolved |
| JECKWELL LIMITED | Private company limited by shares | Dissolved |
| JECKWELL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| JECKWIN LIMITED | Private company limited by shares | Dissolved |
| JECKZ Investments Limited | | Live |
| JECLINE COMPANY LIMITED | Private company limited by shares | Live |
| JECO COMPANY LIMITED | Private company limited by shares | Live |
| JECO PRECISION LIMITED | Private company limited by shares | Live |
| JECO SHIPPING LIMITED | Private company limited by shares | Dissolved |
| JECOM GROUP LIMITED | Private company limited by shares | Dissolved |
| JECON DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| JECON ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| JECON INDUSTRIAL LIMITED | Private company limited by shares | Live |
| JECON CONSULTING SERVICES LIMITED | Private company limited by shares | Live |
| JECONY INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| Jecovi Limited | Private company limited by shares | Live |
| JECPAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| JEC-RUI RESOURCES LIMITED | Private company limited by shares | Dissolved |
| JEC'S COMPANY LIMITED | Private company limited by shares | Live |
| JECSANY INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| JECSEN COMPANY LIMITED | Private company limited by shares | Dissolved |
| JECSON PLASTIC PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| JECTA MOTORS COMPANY LIMITED | Private company limited by shares | Live |
| NEW JECTA MOTORS COMPANY LIMITED | Private company limited by shares | Live |
| SHENZHEN JEC-TECH ELECTRONIC CO., LIMITED | Private company limited by shares | Live |
| JECTEL COMPANY LIMITED | Private company limited by shares | Dissolved |
| JECvape Limited | | Live |