| KNOWHOW COMPANY LIMITED | Private company limited by shares | Live |
| TOP KNOW-HOW COMPANY LIMITED | Private company limited by shares | Dissolved |
| Aero Knowhow Limited | Private company limited by shares | Live |
| KNOW-HOW FAR EAST LIMITED | Private company limited by shares | Live |
| KNOWHOW ELECTRONIC COMPANY LIMITED | Private company limited by shares | Live |
| KNOWHOW ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| KnowHow Holding Limited | Private company limited by shares | Live |
| KNOWHOW IMMIGRATION CONSULTANCY LIMITED | Private company limited by shares | Live |
| KNOWHOW INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KNOWHOW HEALTH MANAGEMENT SERVICE LIMITED | Private company limited by shares | Live |
| KNOW-HOW COMPANY (ASIA PACIFIC) LIMITED -THE- | Private company limited by shares | Live Commenced dormancy on 27-Apr-2005 |
| Knowhow Vitality Prototype Co Limited | Private company limited by shares | Live |
| KNOWHOW STRATEGY LIMITED | Private company limited by shares | Live |
| KNOW-HOW TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |