| HAYA LIMITED | Private company limited by shares | Dissolved |
| HAYA LIMITED | Private company limited by shares | Dissolved |
| HAYA LIMITED | Private company limited by shares | Live |
| A Haya Limited | | Live |
| GUANGZHOU HAYA TRADING CO., LIMITED | Private company limited by shares | Live |
| HAYA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HAYA SOLAR GROUP LIMITED | Private company limited by shares | Live |
| HAYABUSA FSS COMPANY LIMITED | Private company limited by shares | Live |
| HAYABUSA LIMITED | | Live |
| Hayah (Hong Kong) Manufacturer Limited | Private company limited by shares | Dissolved |
| HAYAKAWA & COMPANY, LIMITED | Private company limited by shares | Dissolved |
| HAYAMA LIMITED | Private company limited by shares | Dissolved |
| HONG KONG HAYANG ELECTRIC POWER AUTOMATIC CONTROL EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| HAYAO LIMITED | Private company limited by shares | Dissolved |
| TANWAN (HAYAO) GROUP LIMITED | Private company limited by shares | Live |
| HAYARCHITECTURE LIMITED | Private company limited by shares | Live |
| SUMIO HAYASE COMPANY LIMITED | Private company limited by shares | Dissolved |
| HAYASHI LIMITED | Private company limited by shares | Live |
| HAYASHI CASE (HK) LIMITED | Private company limited by shares | Dissolved |
| HAYASHI IMANITY CO., LIMITED | Private company limited by shares | Live |
| HAYASHI PROPERTIES CO., LIMITED | Private company limited by shares | Dissolved |
| HAYASHI COUTURE LIMITED | Private company limited by shares | Dissolved |
| HAYASHI (H.K.) LIMITED | Private company limited by shares | Dissolved |
| HAYASHI (HK) LIMITED | Private company limited by shares | Live |
| HAYASHI DEN ENGINEERING (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| HAYASHI FELT (H.K.) LIMITED | Private company limited by shares | Live |
| HAYASHI METAL INDUSTRY (H.K.) LIMITED | Private company limited by shares | Live |
| HAYASHI TECHNOS (HK) LIMITED | Private company limited by shares | Live |
| HAYASHI TELEMPU HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| HAYASHI MANSHODO HONG KONG LIMITED | Private company limited by shares | Live |
| HAYASHI TRADING (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HAYASHI INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| HAYASHI INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Live |
| KENNETH S. HAYASHI LIMITED | Private company limited by shares | Dissolved |
| MAPO HAYASHI ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| HAYASHI OPTICAL CO., LIMITED | Private company limited by shares | Dissolved |
| HAYASHI SEIKA LIMITED | Private company limited by shares | Live |
| Hayashi Financial Services Co., Limited | Private company limited by shares | Live |
| Hayashi Trading Company Limited | Private company limited by shares | Live |
| HAYASHIROKU (HONG KONG) LIMITED | Private company limited by shares | Live |
| HAYAT ASIA LIMITED | Private company limited by shares | Live |
| China Hayat International Group Limited | Private company limited by shares | Live |
| Hayat Holding Limited | Private company limited by shares | Live |
| SHAFIQ HAYAT CO., LIMITED | Private company limited by shares | Live |
| HAYATO COMPANY LIMITED | Private company limited by shares | Dissolved |
| HAYATO CO., LIMITED | Private company limited by shares | Live |