| A.I. Trading | Hong Kong |
| A123 Systems, LLC | |
| A4Tech | Guangdong |
| AAC Technologies | Guangdong |
| AAEON Technology, Inc. | Taiwan |
| Abbisko Therapeutics Co., Ltd | Shanghai |
| ABC Taiwan Electronics Corporation | Taiwan |
| ABCHK | Hong Kong |
| Abe Health | Hong Kong |
| Abico (H.K.) International Holding Co., Ltd | Hong Kong |
| Abiochem Biotechnology Co., Ltd | Shanghai |
| Ablaze Pharma | Shanghai |
| Abnova Corporation | Taiwan |
| Aboutnic Technology Corporation | Taiwan |
| Absea Biotechnology Ltd | Beijing |
| AC Investment | Beijing |
| Academia Sinica | Taiwan |
| Academia Sinica - Institute of Mathematics | Taiwan |
| Academy of Mathematics and Systems Sciences, Chinese Academy of Sciences | Beijing |
| AcBel Polytech, Inc. | Taiwan |
| Accela ChemBio Co., Ltd | Shanghai |
| Accelerated Technology | Taiwan |
| Accord Apps Development and Marketing | |
| Accounting Software | Hong Kong |
| Accro Bioscience (Suzhou) Co., Ltd | Jiangsu |
| Accton | Taiwan |
| Accusys | Taiwan |
| Accuver | Hong Kong |
| ACE.Solution Co., Ltd | Taiwan |
| Acer China | Shanghai |
| Acer, Inc. | Taiwan |
| ACES Electronics Co., Ltd | |
| Acesobee Ltd | |
| ACME Communications | Hong Kong |
| Acme Electronics Corporation | Taiwan |
| Acotec | |
| Acoustic Arc International Ltd | Hong Kong |
| ACRO Biomedical Co., Ltd | Taiwan |
| Acrosser Technology Co., Ltd | Taiwan |
| AcroViz, Inc. | Taiwan |
| ACsoft.com.cn | Beijing |
| ACT Genomics | Taiwan |
| ACTi Corporation | Taiwan |
| Action Electronics Co., Ltd | Taiwan |
| Actions Semiconductor Co., Ltd | Guangdong |
| Activa, Inc. | Taiwan |
| ACTT, Inc. | Taiwan |
| Acuemax, Inc. | Guangdong |
| ACULA Technology Corporation | Taiwan |
| Acute Technology, Inc. | Taiwan |