| AttechDesignCentre | Hong Kong |
| Attend Technology, Inc. | Taiwan |
| AU Optronics Corporation | Taiwan |
| Audacy Ventures Ltd | |
| Augmentum | |
| Auker Biotech Co., Ltd | |
| AUKEY Online | Guangdong |
| AUO Corporation | |
| Aura Labs Ltd | Hong Kong |
| Auras Technology Co., Ltd | Taiwan |
| Aurotek Corporation | Taiwan |
| AustCham Hong Kong | Hong Kong |
| Authgear | Hong Kong |
| Authing | |
| Authority Technology Co., Ltd | Taiwan |
| Auto Debug | Shanghai |
| Autobio Diagnostics | |
| Autobio Diagnostics Co., Ltd | |
| AutoBrain | |
| Autodesk China | Beijing |
| Autodesk Hong Kong | Hong Kong |
| Autoflight | Shanghai |
| Autolink | Jiangsu |
| Automated Systems Holdings Ltd | |
| Autoridade Monetária de Macau | Macau |
| Autotek Ltd | Taiwan |
| AVA Angels | Taiwan |
| Avalue Technology, Inc. | Taiwan |
| Avant Browser | Beijing |
| AvantBiz | Hong Kong |
| AVB Cables | Guangdong |
| AVE Science & Technology | |
| AViTA International Corporation | Taiwan |
| Avita Technology (Chongqing) Co., Ltd | |
| Avrio Solutions Co., Ltd | Hong Kong |
| AVT | Hong Kong |
| AVTECH Corporation | Taiwan |
| AVY Industrial Co., Ltd | Taiwan |
| Awesome Search | |
| Awu Technology Co., Ltd | Taiwan |
| Axia8 Ventures | Shanghai |
| Axiomtek | Taiwan |
| Axiomtek Co., Ltd | |
| AxiSoft | Hong Kong |
| Axter Therapeutics | |
| Azure Shine International, Inc. | |
| Azusa Group Ltd | Hong Kong |
| B&E Bio-technology Co., Ltd | |
| B.E.L. Systems Ltd | Hong Kong |
| B2Bmanufactures Directory | Taiwan |