| LUCO HOSE CO., LIMITED | Private company limited by shares | Live |
| LUCO GROUP LIMITED | Private company limited by shares | Live |
| LUCOA TRADING LIMITED | Private company limited by shares | Live |
| LUCOH PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| LUCOH INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| LUCOLIMAT LIMITED | Private company limited by shares | Live |
| LUCOR OPTOELECTRONICS CO LIMITED | Private company limited by shares | Live |
| Lucoric HK Co., Limited | | Live |
| LUCOSON LIMITED | Private company limited by shares | Dissolved |
| LUCOT LIMITED | Private company limited by shares | Live |
| Lucotecia Limited | Private company limited by shares | Live |