| SUMRAP INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SUMRAY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SUMRAYA LIMITED | Private company limited by shares | Live |
| SUMRIAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMRICH LIMITED | Private company limited by shares | Dissolved |
| SUMRICH LIMITED | Private company limited by shares | Live |
| Sumrine Appliance Limited | Private company limited by shares | Live |
| SHENZHEN SUMRING TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SUMRISE LIMITED | Private company limited by shares | Live |
| SUMRISE 1 LIMITED | Private company limited by shares | Live |
| SUMRISE 2 LIMITED | Private company limited by shares | Live |
| SUMRISE 4 LIMITED | Private company limited by shares | Live |
| SUMRISE SERVICE LIMITED | Private company limited by shares | Live |
| SUMS LIMITED | Private company limited by shares | Live |
| Sum's Dumpling Limited | Private company limited by shares | Live |
| LADY SUM'S EDUCATION FOUNDATION LIMITED | Company limited by guarantee | Live |
| SUM'S FAMILY LIMITED | Private company limited by shares | Live |
| SUM'S FRIEND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| SUMS MACHINERY LIMITED | Private company limited by shares | Live |
| Squared Sums Limited | Private company limited by shares | Live |
| SUMSAM INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| SUMSAVA TRADING LIMITED | Private company limited by shares | Dissolved |
| Sumscope Limited | Private company limited by shares | Live |
| Sumscope (Asia) Limited | Private company limited by shares | Live |
| SUMSHA LIMITED | Private company limited by shares | Live |
| SUMSHINE HOLDING LIMITED | Private company limited by shares | Live |
| AGIETEC SUMSHINE MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| Sumshow Limited | Private company limited by shares | Live |
| Sumsoar Supply Chain Co., Limited | Private company limited by shares | Live |
| Sumsource Limited | | Live |
| SUMSTRONG LIMITED | Private company limited by shares | Dissolved |
| SUMSTRONG INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SUMSUI TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| SUMSUN LIMITED | Private company limited by shares | Dissolved |
| SUMTA Limited | Private company limited by shares | Live |
| SUMTA CONSULTING ENGINEERS LIMITED | Private company limited by shares | Live |
| Hong Kong Sumteam tech Limited | Private company limited by shares | Live |
| SUMTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK SUMTECH LIMITED | Private company limited by shares | Dissolved |
| SUMTECH LIMITED | Private company limited by shares | Live |
| SUMTECH ENTERPRISE LIMITED | Private company limited by shares | Live |
| SUMTER ENTERPRISE LIMITED | Private company limited by shares | Live |
| SUMTEX LIMITED | Private company limited by shares | Dissolved |
| SUMTHING LIMITED | Private company limited by shares | Live |
| SUMTIME COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMTING TRADE LIMITED | | Live |
| SUMTO LIMITED | Private company limited by shares | Dissolved |
| SUMTON LIMITED | Private company limited by shares | Live |
| SUMTONG INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Sumtop Trade Co., Limited | Private company limited by shares | Live |
| Sumtop Hong Kong Limited | Private company limited by shares | Live |
| SUMTOP FINISHING MACHINE CO., LIMITED | Private company limited by shares | Live |
| SumTotal Systems Limited | Private company limited by shares | Live |
| SUMTRADE LIMITED | | Live |
| SUMTREE INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Sumtronic International Co., Limited | Private company limited by shares | Live |
| SUMTRY LIMITED | Private company limited by shares | Live |
| Sumtxuni (Hong Kong) Technology Co., Limited | | Live |
| Sumu Trade Co., Limited | Private company limited by shares | Live |
| SUMU DESIGN AND CONSTRUCTION COMPANY LIMITED | | Live |
| Sumu Group Limited | Private company limited by shares | Live |
| HK SUMU IMPEX LIMITED | | Live |
| SUMUFOO INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| Sum-V Industrial Co., Limited | Private company limited by shares | Live |
| SUMVIC LIMITED | Private company limited by shares | Dissolved |
| SUMVIER TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| SUMVISION DIRECT LIMITED | Private company limited by shares | Live |
| SUMWA (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMWA INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUMWAH GUANGDONG TRANSPORT MANAGEMENT LIMITED | Private company limited by shares | Live |
| SUMWAI TECHNOLOGY (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| SUMWAY LIMITED | Private company limited by shares | Dissolved |
| SUMWAY LIMITED | Private company limited by shares | Dissolved |
| SUMWAY LIMITED | Private company limited by shares | Dissolved |
| SUMWAY HK COMPANY LIMITED | Private company limited by shares | Live |
| SUMWAY ENTERPRISES COMPANY LIMITED | Private company limited by shares | Live |
| SUMWAY INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SUMWAY INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SUMWAY INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SUMWAY INTERNATIONAL (HONGKONG) LIMITED | Private company limited by shares | Live |
| SUMWAY TRADING LIMITED | Private company limited by shares | Dissolved |
| SUMWIDE TRADING LIMITED | Private company limited by shares | Dissolved |
| SUMWILL UPHOLSTERY MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| SUMWINNING (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| SUMWISE LIMITED | Private company limited by shares | Dissolved |
| SUMWO LIMITED | Private company limited by shares | Dissolved |
| SUMWOOD LIMITED | Private company limited by shares | Dissolved |
| Sum-Wood Group Investment Limited | Private company limited by shares | Live |
| SUMWOOD (HK) LIMITED | Private company limited by shares | Dissolved |
| SUMWOOD INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUM-WOOD PRODUCTIONS LIMITED | Private company limited by shares | Live |
| SUMWWW ELECTRONICS LIMITED | Private company limited by shares | Live |
| SUMXIN INTERNATIONAL CO. LIMITED | Private company limited by shares | Live |
| Sumxing Co., Limited | Private company limited by shares | Live |
| SUMYAT LIMITED | Private company limited by shares | Live |
| SUMYEE FOODS LIMITED | Private company limited by shares | Live |
| HK SUMYEE TRADING LIMITED | Private company limited by shares | Live |
| SUMYI (LAMTIN) COMPANY LIMITED | Private company limited by shares | Live |
| SUMYIELD COMPANY LIMITED | Private company limited by shares | Dissolved |
| SumYin Limited | Private company limited by shares | Live |