| CLEANLY INDUSTRIAL (SAN FAT) LIMITED | Private company limited by shares | Dissolved |
| CleanMagic Company Limited | | Live |
| CLEANMAN PRO SERVICE COMPANY LIMITED | | Live |
| CLEANMAN ACCOUNTS & TAXATION LIMITED | Private company limited by shares | Dissolved |
| CLEANMAN (HONGKONG) SANITARY WARE CO., LIMITED | Private company limited by shares | Live |
| CLEANMASTER LIMITED | Private company limited by shares | Dissolved |
| CLEANOIL LIMITED | Private company limited by shares | Live |
| CleanOil IP Limited | Private company limited by shares | Live |
| CleanOil Investment Limited | Private company limited by shares | Live |
| Cleanoo Company Limited | Private company limited by shares | Live |
| CLEANOVATION LIMITED | Private company limited by shares | Live |
| CLEANOVATION LIMITED | | Live |
| CLEANPACK LIMITED | Private company limited by shares | Live |
| CLEANPER (UNITED KINGDOM) CO., LIMITED | Private company limited by shares | Live |
| CLEANPOWER ASIA LIMITED | Private company limited by shares | Live |
| CleanPRO Limited | Private company limited by shares | Live |
| Data CleanPro (HK) Limited | Private company limited by shares | Live |
| ESD CLEANROOM LIMITED | Private company limited by shares | Live |
| CY CLEANROOM PRODUCTS HK LIMITED | | Live |
| PLC CLEANROOM AND SCIENTIFIC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CLEANSE COMPANY LIMITED | Private company limited by shares | Live |
| Cleanse Concepts Company Limited | Private company limited by shares | Live |
| MASTER WONG CLEANSE COMPANY LIMITED | Private company limited by shares | Live |
| CleanSea Administration Limited | Private company limited by shares | Dissolved |
| CLEANSEA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CLEANSEA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CLEANSEA RECYCLING LIMITED | Private company limited by shares | Dissolved |
| Cleansea Ship Management Co., Limited | | Live |
| CLEANSEA TRADING LIMITED | | Live |
| Cleanship Hong Kong Limited | Private company limited by shares | Live |
| SUN LEE CLEANSING COMPANY LIMITED | Private company limited by shares | Live |
| Cleansing Limited | Private company limited by shares | Live |
| CLEANSING APE LIMITED | | Live |
| LI's Cleansing Products Limited | Private company limited by shares | Live |
| HAPPY CAR CLEANSING SERVICE LIMITED | Private company limited by shares | Live |
| Cleanspace (China) Limited | | Live |
| CLEANSTAT INTERNATIONAL (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| CleanStation Technology Co., Limited | Private company limited by shares | Live |
| Cleansy Group Limited | Private company limited by shares | Live |
| CLEANTEC MARITIME LIMITED | Private company limited by shares | Live |
| CLEANTEC TRADE LIMITED | Private company limited by shares | Dissolved |
| IGC CLEANTECH LIMITED | Private company limited by shares | Live |
| AA CLEANTECH LIMITED | | Live |
| DL CLEANTECH HK COMPANY LIMITED | | Live |
| Hua Tai Cleantech Co. Limited | | Live |
| Cleantech Capital Limited | Private company limited by shares | Live |
| TUNG'S CLEANTECH INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| HTM CleanTek Limited | Private company limited by shares | Live |
| CLEANTOOLS (C) COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG CLEANTOP LIMITED | Private company limited by shares | Live |
| CLEAN-V (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CLEANWAVE BATHROOM PRODUCTS LIMITED | Private company limited by shares | Live |
| CLEANWAVE ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| PUYANG CLEANWAY CHEMICALS LIMITED | | Live |
| Cleanway Enterprise Limited | Private company limited by shares | Live |
| CLEANWAY ENGINEERING (HK) LIMITED | Private company limited by shares | Live |
| CLEANWAY INVESTMENTS LIMITED | Private company limited by shares | Live |
| Shanghai Cleanwell Aviation Ground Service (HK) Co. Limited | Private company limited by shares | Live |
| CLEANZON LIMITED | Private company limited by shares | Live |