| KEYSTONE (F.E.) LIMITED | Private company limited by shares | Live |
| KEYSTONE HOLDING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Keystone Holding Limited | | Live |
| KEYSTONE CAPITAL HOLDING LIMITED | Private company limited by shares | Live |
| Keystone Innovations Limited | Private company limited by shares | Live |
| KeyStone Insurance Limited | Private company limited by shares | Live |
| KEYSTONE INSURANCE BROKERS LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE INTEGRATION LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Keystone Asia Investment HK Limited | Private company limited by shares | Live |
| Keystone Investments And Developments Pty Limited | Private company limited by shares | Live |
| KEYSTONE LEARNING LIMITED | Private company limited by shares | Dissolved |
| L.R. CAPITAL KEYSTONE INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| KEYSTONE MANAGMENT COMPANY LIMITED | Private company limited by shares | Live |
| North Haven Keystone Company Limited | Private company limited by shares | Live |
| Keystone Offshore Limited | | Live |
| Oriental Keystone Investment Limited | Private company limited by shares | Live |
| KEYSTONE ASIA PACIFIC INVESTMENTS LIMITED | Private company limited by shares | Live |
| KEYSTONE PROJECTS LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE RESOURCES LIMITED | Private company limited by shares | Live |
| KEYSTONE SHIPPING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE SHIPPING COMPANY, LIMITED -THE- | Private company limited by shares | Dissolved |
| KeyStone Solutions Limited | Private company limited by shares | Live |
| KEYSTONE SPECIALITY INGREDIENTS LIMITED | Private company limited by shares | Live |
| KEYSTONE SYNDICATE LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE TOBACCO COMPANY, LIMITED | Company limited by guarantee | Dissolved |
| KEYSTONE UNDERWRITERS LIMITED | Private company limited by shares | Live |
| Central United Keystone Group Limited | Private company limited by shares | Live |
| Keystone Wealth Limited | Private company limited by shares | Live |
| Keystoners Company Limited | Private company limited by shares | Live |
| KEYSTONES COMPANY LIMITED | Private company limited by shares | Dissolved |
| Keystones Limited | Private company limited by shares | Live |
| KEYSTONES REALTY LIMITED | Private company limited by shares | Live |
| KEYSTORE GROUP CO., LIMITED | Private company limited by shares | Live |
| KEYSTORE (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| KEYSTORE HONG KONG LIMITED | Private company limited by shares | Live |
| KEYSTORE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KEYSTORN LIMITED | Private company limited by shares | Dissolved |
| KEYSTROKE LIMITED | Private company limited by shares | Live |
| KEYSUCCESS LIMITED | | Live |
| KEYSUCCESS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| KEYSUN LIMITED | Private company limited by shares | Live |
| KEYSUN WEALTH CREATION LIMITED | Private company limited by shares | Live |
| KEYSUN ENTERPRISES LIMITED | Private company limited by shares | Live |
| KEYSUN GROUP LIMITED | Private company limited by shares | Live |
| HK KEYSUN GROUP LIMITED | Private company limited by shares | Live |
| KEYSUN SERVICE GROUP LIMITED | Private company limited by shares | Live |
| KEYSUN PACIFIC LIMITED | Private company limited by shares | Live |
| SHENZHEN KEYSUN TECHNOLOGY LIMITED | Private company limited by shares | Live |
| KEYSUNCHINA-THE First Brand Of International Service Business College Co., Limited | Private company limited by shares | Live |
| KEYS-WELLSTAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEYSWIN LIMITED | Private company limited by shares | Dissolved |
| KEYSWIN ASIA LIMITED | Private company limited by shares | Dissolved |
| KEYSWIN INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| KEYSWIN INDUSTRIAL LIMITED | Private company limited by shares | Live Commenced dormancy on 03-Mar-2010 |
| KEYSWIN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KEYSWIN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KEYSWIN INVESTMENT LIMITED | Private company limited by shares | Live |
| KEYSWIN TRADING LIMITED | Private company limited by shares | Dissolved |
| KEYSWORLD Limited | Private company limited by shares | Live |
| Keysworth Finance Company Limited | Private company limited by shares | Live |
| KEYSYS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| KEYSYSTEM LIMITED | Private company limited by shares | Dissolved |
| KEYSYSTEMS LIMITED | Private company limited by shares | Live |
| KEYTA INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Key-Tac Limited | Private company limited by shares | Live |
| KEYTEC LIMITED | Private company limited by shares | Live |
| KeyTec Hong Kong Limited | Private company limited by shares | Live |
| KEYTEC TECHNOLOGY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| KEYTEC TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| KEYTECH LIMITED | Private company limited by shares | Dissolved |
| KEYTECH LIMITED | Private company limited by shares | Live |
| KEYTECH ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| KEYTECH SYSTEMS ASIA CO., LIMITED | Private company limited by shares | Live |
| KEYTECH DATA SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| KEYTECH ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| KEYTECH INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| KEYTECH INDUSTRIAL LIMITED | Private company limited by shares | Live |
| KEYTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KEYTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GOLD KEYTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KEYTECH MANUFACTURING LIMITED | Private company limited by shares | Live |
| KML Keytech Manufacturing Limited | Private company limited by shares | Live |
| KEY-TECH MICROELECTRONICS LIMITED | Private company limited by shares | Live |
| KEYTECH PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| Keytech System (Asia) Limited | Private company limited by shares | Live |
| KEYTECH AUTOMATION TECHNOLOGY LIMITED | | Live |
| KEY-TECH TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEYTECH ENGINEERING & TRADING LIMITED | Private company limited by shares | Dissolved |
| KEY-TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Keyteck Co. Limited | Private company limited by shares | Dissolved |
| KEYTEK (HK) CO., LIMITED | Private company limited by shares | Live |
| KEYTEK INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KEYTEK TECHNOLOGY LIMITED | Private company limited by shares | Live |
| KEYTEN LIMITED | Private company limited by shares | Dissolved |
| KEYTES DIGITAL SOLUTIONS LIMITED | Private company limited by shares | Live |
| KEYTESS INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEYTEX LIMITED | Private company limited by shares | Dissolved |