| HYTANICO LIMITED | Private company limited by shares | Live |
| HYTE LIMITED | Private company limited by shares | Dissolved |
| HYTEC ELECTROPLATING LIMITED | Private company limited by shares | Dissolved |
| HY-TECH LIMITED | Private company limited by shares | Dissolved |
| HYTECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HK HYTED TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HYTEK LIMITED | | Live |
| HYTELIK TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| HYTERA LIMITED | Private company limited by shares | Live |
| Hytera communications Limited | Private company limited by shares | Live |
| Hytera Wenyuan (Hong Kong) Corporation Limited | | Live |
| Hytera High-Tech (Hong Kong) Company Limited | | Live |
| Hytera Communications (Hong Kong) Company Limited | Private company limited by shares | Live |
| Hytera Information (Hong Kong) Company Limited | | Live |
| Hytera International (Hong Kong) Company Limited | | Live |
| Hytera International Technology (Hong Kong) Company Limited | | Live |
| Hytera Technology (Hong Kong) Company Limited | Private company limited by shares | Live |
| HYTERA COMMUNICATION & SYSTEM LIMITED | Private company limited by shares | Live |
| Hytesoft (Hong Kong) Co., Limited | Private company limited by shares | Live |
| PERFECTION HY-TEST ASIA LIMITED | Private company limited by shares | Dissolved |
| HYTHE LIMITED | Private company limited by shares | Dissolved |
| HY-THUNDER TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HYTIME HOLDING (CHINA) LIMITED | Private company limited by shares | Live |
| HYTIME INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| HYTIME INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| HYTK HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HYT-Mart LIMITED | Private company limited by shares | Live |
| HYTONG TRADING LIMITED | Private company limited by shares | Dissolved |
| HYTOP COMPANY LIMITED | Private company limited by shares | Live |
| HY-TOPSAVING SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| HYTORC ENTERPRISES LIMITED | Private company limited by shares | Live |
| HYTORC GROUP INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| HYTOY LIMITED | Private company limited by shares | Dissolved |
| Hytrix Limited | | Live |
| HYTRON LIMITED | Private company limited by shares | Dissolved |
| HYTRONIK SOLUTIONS (HOLDINGS) LIMITED | Private company limited by shares | Live |
| HYTRONIK INDUSTRIAL (HONG KONG) LIMITED | | Live |
| HYTRONIK INDUSTRIAL LIMITED | Private company limited by shares | Live |
| HYTRUN LIMITED | Private company limited by shares | Live |
| HYTRUN ENTERPRISE LIMITED | Private company limited by shares | Live |
| HYTS GROUP LIMITED | Private company limited by shares | Dissolved |
| HYTSU GROUP HOLDING COMPANY LIMITED | Private company limited by shares | Live |
| HYTTO LIMITED | Private company limited by shares | Live |
| Hytx.com China Holding Limited | Private company limited by shares | Live |
| HK HYTY INT'L SLIMMING CHAIN GROUP LIMITED | Private company limited by shares | Live |
| HK HYUAN LIMITED | Private company limited by shares | Live |
| H-YUAN Asset Management Limited | Private company limited by shares | Live |
| HYUAN New Material Limited | | Live |
| HYUAN TRADING LIMITED | Private company limited by shares | Live |
| HYUE CAPITAL LIMITED | | Live |
| HYUE CO., LIMITED | Private company limited by shares | Live |
| HYUE TRADE CO., LIMITED | Private company limited by shares | Live |
| HYUE TRADE LIMITED | | Live |
| HK HYUE TRADING LIMITED | Private company limited by shares | Live |
| HYUEN TRADE LIMITED | Private company limited by shares | Live |
| Hyuet Capital Limited | | Live |
| HYUGA LIMITED | Private company limited by shares | Live |
| TAE HYUK LIMITED | Private company limited by shares | Live |
| HYUKHAE LIMITED | Private company limited by shares | Live |
| HYUN JU COMPANY LIMITED | Private company limited by shares | Live |
| HYUN IMC LIMITED | Private company limited by shares | Live |
| KIM HYUN COMPANY LIMITED | Private company limited by shares | Live |
| Hyun One Limited | Private company limited by shares | Live |
| Hyun Mu Limited | | Live |
| Hyun Chak Development Co., Limited | Private company limited by shares | Live |
| Hyun Chen (China) Clothing Limited | Private company limited by shares | Live |
| Ching Hyun Limited | Private company limited by shares | Live |
| JIN HYUN CO., LIMITED | Private company limited by shares | Dissolved |
| Hyun Co., Limited | Private company limited by shares | Dissolved |
| WOO HYUN CO., LIMITED | Private company limited by shares | Live |
| HYUN IL CO., LIMITED | Private company limited by shares | Live |
| DAE HYUN TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| HYUN CORPORATION LIMITED | Private company limited by shares | Dissolved |
| Wu Hyun Engineering Co., Limited | Private company limited by shares | Live |
| Hyun Noodle Restaurant Food Company Limited | Private company limited by shares | Live |
| Yee Hyun Group Limited | Private company limited by shares | Live |
| Hyun Bo Hardware Product Co., Limited | Private company limited by shares | Live |
| HYUN HEUNG COMPANY LIMITED | Private company limited by shares | Dissolved |
| HYUN JIN (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUNG HYUN (H.K) CO., LIMITED | Private company limited by shares | Live |
| TAE HYUN TECH-TRONICS (HK) CO., LIMITED | Private company limited by shares | Live |
| HYUN SEUNG ELECTRONICS (H.K.) CO. LIMITED | Private company limited by shares | Dissolved |
| HWANG HYUN DUK (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| HYUN KWANG (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| HYUN SUNG SHOES (HK) LIMITED | Private company limited by shares | Live |
| HYUN FOX TECH (HK) LIMITED | Private company limited by shares | Live |
| HYUN NA TRADE (HK) LIMITED | Private company limited by shares | Live |
| HYUN YONG TRADE (H.K.) LIMITED | Private company limited by shares | Live |
| HYUN SUNG HOLDINGS CO., LIMITED | Private company limited by shares | Dissolved |
| DAE HYUN (HONG KONG) ELECTRONICS LIMITED | Private company limited by shares | Live |
| ART HYUN HONG KONG GALLERY (ASIA) CO. LIMITED | Private company limited by shares | Live |
| SAM HYUN TECH (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong Sung Hyun Trade Limited | Private company limited by shares | Dissolved |
| HYUN INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Dong Hyun International Limited | Private company limited by shares | Live |
| HYUN YOUNG LOGISTICS (HK) LIMITED | Private company limited by shares | Live |
| HYUN MING COMPANY LIMITED | Private company limited by shares | Live |
| HYUN MODE LIMITED | Private company limited by shares | Live |
| Hyun China Optoelectronics Technology Co., Limited -The- | Private company limited by shares | Live |
| Seung Hyun Packing Co., Limited | Private company limited by shares | Live |