| Siliconware Precision Industries Co., Ltd | Taiwan |
| SilverStone Technology Co., Ltd | Taiwan |
| Simbury Ltd | Hong Kong |
| Simnova Biotherapeutics | |
| Simtech Systems Consultancy | Hong Kong |
| SINA Beijing | Beijing |
| SINA Hong Kong | Hong Kong |
| Sina Taiwan | Taiwan |
| SineuGene | |
| Sinew Technology Co., Ltd | Taiwan |
| Singular Technology Co., Ltd | Taiwan |
| Sino Biological, Inc. | Beijing |
| Sino Biopharmaceutical Co., Ltd | |
| Sino-Agri (Beijing) Technology Co., Ltd | |
| Sino-American Huashitong Biomedical Technology (Wuhan) Co., Ltd | Hubei |
| SinoMab Bioscience Ltd | Hong Kong |
| Sinopep | |
| Sinorda Biotechnology | |
| Sinosoft Co., Ltd | Beijing |
| Sinosoft Technology | Hong Kong |
| SinoTech Group | Beijing |
| Sinotherapeutics | |
| SINOVAC Biotech Ltd | Beijing |
| Sinovantage International Ltd | Shanghai |
| Sinovation Ventures | |
| SinoWeb.com.cn | Beijing |
| Sintaho Pharmaceuticals | |
| Sintech Technology Co., Ltd | Taiwan |
| Sinwan Electric Industries Co., Ltd | Taiwan |
| Siping Vocational College | |
| Sironax Ltd | |
| SiS International Ltd | Hong Kong |
| Sitiless Co., Ltd | Taiwan |
| Sitronix | Taiwan |
| SIWARD Crystal Technology Co., Ltd | Taiwan |
| Siwei (Shanghai) Biotechnology Co., Ltd | Shanghai |
| Sixnet | Beijing |
| Siyang Interactive | Guangdong |
| Skardin Industrial Corporation | Taiwan |
| SKL Tech Co., Ltd | Taiwan |
| Skwentex International Corporation | Taiwan |
| Sky Internet of Things | Beijing |
| Sky9 Capital | Beijing |
| SkyCable Enterprise Co., Ltd | Taiwan |
| SkyHigh Memory Ltd | |
| SkyHost.com.hk | Hong Kong |
| Skyline Therapeutics | |
| Skynet Information Technology (Macau) Co., Ltd | |
| Skytouch Technology Co., Ltd | Sichuan |
| Slashnode Ltd | Hong Kong |