| Sun Po (Sum Groups) Construction Engineering Limited | Private company limited by shares | Live |
| S.U.M. INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SC (LEE SUM) STORAGE COMPANY LIMITED | Private company limited by shares | Live |
| SUMA LIMITED | Private company limited by shares | Live |
| Suma Supply Limited | | Live |
| SUMABLE LIMITED | Private company limited by shares | Dissolved |
| SUMAC LIMITED | Private company limited by shares | Live |
| SUMAC FOOD LIMITED | Private company limited by shares | Live |
| SUMAC HONGKONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sumac Technology Limited | Private company limited by shares | Live |
| SUMAC TRADING LIMITED | Private company limited by shares | Live |
| SUMACH COMPANY LIMITED | Private company limited by shares | Live |
| SUMADI COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMA-FESCH CONTRACTORS LIMITED | Private company limited by shares | Dissolved |
| SUMAFIELD COMPANY LIMITED | Private company limited by shares | Live |
| SUMAGENT.HK. LIMITED | Private company limited by shares | Live |
| SUMAIN LIMITED | Private company limited by shares | Dissolved |
| Foshan Sumaitong Trading Co., Limited | Private company limited by shares | Live |
| Sumaka Trading Limited | Private company limited by shares | Live |
| Sumala Limited | Private company limited by shares | Live |
| SUMALETA LIMITED | Private company limited by shares | Live |
| SUMALINK TEK CO., LIMITED | Private company limited by shares | Live |
| SUMAMIKI LIMITED | Private company limited by shares | Live |
| SUMAN ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SUMANDAL LIMITED | Private company limited by shares | Live |
| SUMANGAL TRADING CO., LIMITED | Private company limited by shares | Live |
| Sumant (TAIWAN) Co., Limited | Private company limited by shares | Live |
| Sumantri Trade and Finance Limited | | Live |
| HK SUMANYE INDUSTRY AND TRADE LIMITED | | Live |
| SUMANYE INTERNATIONAL TRADE CO., LIMITED | | Live |
| SUMAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| FUJIAN SUMAR POWER EQUIPMENTS CO., LIMITED | Private company limited by shares | Live |
| Sumar Global Limited | Private company limited by shares | Live |
| FIVE-WOOD SUMAR MARINE CO., LIMITED | Private company limited by shares | Live |
| SUMAR PACIFIC LIMITED | Private company limited by shares | Dissolved |
| AL SUMARIA TRADING CO., LIMITED | Private company limited by shares | Live |
| SUMARKO COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMARROCA WINES LIMITED | Private company limited by shares | Dissolved |
| SUMARS PROMOTION LIMITED | Private company limited by shares | Dissolved |
| Sumarte Technology Limited | Private company limited by shares | Live |
| SUMAS ENTERPRISES LIMITED | Private company limited by shares | Live |
| SUMASS CO., LIMITED | Private company limited by shares | Live |
| SUMATERA CORPORATION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SUMATERA EXPRESS LIMITED | Private company limited by shares | Live |
| KOPI LUWAK (SUMATERA) CO., LIMITED | Private company limited by shares | Live |
| Sumaths Company Limited | Private company limited by shares | Live |
| Sumatics Limited | Private company limited by shares | Live |
| Sumatics Blades Limited | Private company limited by shares | Live |
| SUMATIONS LIMITED | Private company limited by shares | Live |
| SUMATRA LIMITED | Private company limited by shares | Live |
| Sumatra Power Investment Corp. Limited | Private company limited by shares | Live |
| SUMATRA FRATERNITY LIMITED | Company limited by guarantee | Live |
| SUMATRA INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sumatra Everbright Resources Limited | Private company limited by shares | Live |
| SUMATRA TIMBER COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMATRA WOODCRAFT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMATRADE LIMITED | Private company limited by shares | Live |
| SUMATROP (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SUMAVISION TECH CO., LIMITED | Private company limited by shares | Live |
| SUMAVISION INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Live |
| SUMAX LIMITED | Private company limited by shares | Dissolved |
| SUMAX INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUMAX HK PRIVATE LIMITED | Private company limited by shares | Live |
| SUMAX MOTOR TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| Sumaya 369 Limited | Private company limited by shares | Live |
| SUMAYUEN (INT'L) CO., LIMITED | Private company limited by shares | Dissolved |
| SumBeauty Hair Limited | Private company limited by shares | Live |
| Sumbebe Import&Export Co., Limited | | Live |
| SUMBEE COMPANY LIMITED | Private company limited by shares | Live |
| SUMBER COMPANY LIMITED | Private company limited by shares | Live |
| SUMBERG ADVISOR GROUP LIMITED | Private company limited by shares | Live |
| Sumbest Development Limited | | Live |
| SUMBO LIMITED | Private company limited by shares | Dissolved |
| SUMBO HK COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sumbo Limited | Private company limited by shares | Live |
| Sumbo Transport (30) Limited | Private company limited by shares | Live |
| Sumbo Transport (38) Limited | Private company limited by shares | Live |
| SUMBO TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| SUMBO ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Sumbo HK Group Limited | Private company limited by shares | Live |
| SUMBO TRADING LIMITED | Private company limited by shares | Live |
| SUMBOOT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMBRELLA CORP LIMITED | Private company limited by shares | Live |
| SUMBURG LIMITED | Private company limited by shares | Dissolved |
| SUMBURG DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SUMCHART LIMITED | Private company limited by shares | Dissolved |
| SUMCHEONG INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Sumchi Limited | Private company limited by shares | Live |
| SUMDA LIMITED | Private company limited by shares | Dissolved |
| SUMDA ELECTRONICS (H.K.) LIMITED | Private company limited by shares | Live |
| HONG KONG SUMDA TRADING COMPANY LIMITED | Private company limited by shares | Live |
| SUMDA INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| Sumda Trading (Hongkong) Co., Limited | Private company limited by shares | Live |
| SUMDANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMDANCE INVESTMENT LIMITED | Private company limited by shares | Live |
| SumData Limited | Private company limited by shares | Live |
| SUMDEX LIMITED | Private company limited by shares | Live |
| SUMDI GROUP CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Sumdong Trading Co., Limited | Private company limited by shares | Live |
| HongKong SumDong Jewelry Holding Group Limited | Private company limited by shares | Dissolved |