| Sincero Industrial Limited | Private company limited by shares | Live |
| SINCERO INTERNATIONAL CONSULTANT LIMITED | Private company limited by shares | Live |
| SINCEROUS LIMITED | Private company limited by shares | Dissolved |
| SINCERUN (HK) CO., LIMITED | Private company limited by shares | Live |
| SinceSky Limited | | Live |
| SINCETA (PVT) LIMITED | Private company limited by shares | Live |
| SINCEUR TRADING LIMITED | Private company limited by shares | Live |
| SINCEWOOD CO. LIMITED | Private company limited by shares | Live |
| Sinceyouth Electronics Technology Limited | Private company limited by shares | Live |
| SIN.CHAN LIMITED | Private company limited by shares | Live |
| SINCHAN GROUP CO., LIMITED | Private company limited by shares | Live |
| SINCHENG INT'L BUSINESS (HK) LIMITED | Private company limited by shares | Live |
| Sincher Metal Material Co. Limited | Private company limited by shares | Live |
| HONG KONG SINCHEUK GROUP LIMITED | Private company limited by shares | Live |
| Sincheung Limited | Private company limited by shares | Live |
| SINCHN TRADING LIMITED | | Live |
| Sincho Group Co., Limited | Private company limited by shares | Live |
| HK Sinchon Co., Limited | Private company limited by shares | Live |
| SinchungTrade Co., Limited | Private company limited by shares | Live |
| SINCINO INTERNATIONAL TRADE (HONG KONG) LIMITED | Private company limited by shares | Live |
| SINCLAIR LIMITED | Private company limited by shares | Dissolved |
| SINCLAIR LIMITED | Private company limited by shares | Dissolved |
| SINCLAIR LIMITED | Private company limited by shares | Live |
| SINCLAIR ASIA LIMITED | Private company limited by shares | Live |
| SINCLAIR CONTRACTORS LIMITED | Private company limited by shares | Dissolved |
| SINCLAIR ENTERPRISE LIMITED | Private company limited by shares | Live |
| SINCLAIR INVESTMENTS LIMITED | Private company limited by shares | Live |
| Sinclair Pacific Limited | Private company limited by shares | Live |
| SINCLAIR SECRETARIES LIMITED | Private company limited by shares | Live |
| SINCNO(HK) LIMITED | | Live |
| SINCO NBL LIMITED | Private company limited by shares | Dissolved |
| SINCO LIMITED | Private company limited by shares | Dissolved |
| SINCO LIMITED | Private company limited by shares | Live |
| SINCO LIMITED | Private company limited by shares | Live |
| SINCO CAPITAL LIMITED | Private company limited by shares | Dissolved |
| USA NAVI-UNIVERSE SINCO (H.K.) INTERNATIONAL RESEARCH CENTER LIMITED | Private company limited by shares | Live |
| SINCO IMPORT&EXPORT HONGKONG CO., LIMITED | Private company limited by shares | Live |
| Sinco Manufacturer Co., Limited | Private company limited by shares | Live |
| SINCO PHARMACEUTICAL CO., LIMITED | Private company limited by shares | Live |
| SINCO CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| SHENZHEN SINCO ELECTRON CO., LIMITED | Private company limited by shares | Dissolved |
| SINCO ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| SINCO ELECTRONIC CO., LIMITED | Private company limited by shares | Live |
| SINCO ELECTRONIC (HK) CO., LIMITED | Private company limited by shares | Live |
| Sinco Electronics Co., Limited | Private company limited by shares | Live |
| Sinco Century Electronics Co., Limited | Private company limited by shares | Live |
| SINCO ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SINCO ENTERPRISES LIMITED | Private company limited by shares | Live |
| SINCO GROUP COMPANY LIMITED | Private company limited by shares | Live |
| SINCO INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| SINCO (H.K.) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SINCO GROUP LIMITED | Private company limited by shares | Live |
| Sinco Group (Hong Kong) Pte. Limited | Private company limited by shares | Live |
| SKY & SINCO INDUSTRIAL (HONG KONG) CO., LIMITED | Private company limited by shares | Dissolved |
| SINCO INDUSTRIAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| SINCO BEST (INTERNATIONAL) HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SINCO INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| Henan Sinco Industry Technology Limited | Private company limited by shares | Live |
| SINCO INTERNATIONAL LIMITED | Private company limited by shares | Live |
| FRANCE SINCO INT'L COSMETIC GROUP LIMITED | Private company limited by shares | Live |
| SINCO INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINCO INVESTMENT LIMITED | Private company limited by shares | Live Commenced dormancy on 05-Sep-2016 |
| Jinan Sinco Testing Equipment Co., Limited | Private company limited by shares | Dissolved |
| Sinco Manufacturing Limited | Private company limited by shares | Live Commenced dormancy on 21-Sep-2018 |
| SINCO (H.K.) MEDICAL GROUP LIMITED | Private company limited by shares | Live |
| SINCO METALS LIMITED | Private company limited by shares | Live |
| SINCO TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SINCO TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINCO INTERNATIONAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| SINCO TECHNOLOGY (H.K.) LIMITED | Private company limited by shares | Live |
| Sin-Co Timepiece Co., Limited | Private company limited by shares | Live |
| SINCO TRADE LIMITED | Private company limited by shares | Dissolved |
| SINCO TRADING LIMITED | Private company limited by shares | Dissolved |
| TOP SINCO TRADING HK CO., LIMITED | Private company limited by shares | Live |
| SINCO TRANSPORTATION COMPANY LIMITED | Private company limited by shares | Live |
| SINCO-CNC LIMITED | Private company limited by shares | Live |
| HK SINCODYNAMIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SINCOLA LIMITED | Private company limited by shares | Dissolved |
| SINCOLIT LIMITED | Private company limited by shares | Dissolved |
| SINCOMSPEC LIMITED | Private company limited by shares | Dissolved |
| SINCON LIMITED | Private company limited by shares | Dissolved |
| SINCON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SINCONFIELD COMPANY LIMITED | Private company limited by shares | Dissolved |
| SINCONI CO., LIMITED | Private company limited by shares | Live |
| SINCORE LIMITED | Private company limited by shares | Dissolved |
| SINCORE MACHINERY CO., LIMITED | | Live |
| Sincore Consulting Limited | Private company limited by shares | Live |
| SINCORE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SINCORE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Sincore Technology (HK) Co., Limited | | Live |
| SINCORE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hongkong Sincore Industry Co., Limited | Private company limited by shares | Live |
| SINCORE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINCORE INVESTMENT LIMITED | Private company limited by shares | Live |
| SINCORE PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| SINCORE DIGITAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Sincoro Co Limited | Private company limited by shares | Live |
| SINCORP LIMITED | Private company limited by shares | Live |
| SINCORP INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SINCOVID INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |