To verify a trade company in Suzhou, follow these steps:

1. **Official渠道**:
– **Suzhou Municipal Bureau of Industry and Information (MIIT)**: This government department is responsible for registering and verifying businesses. Contact them via their official website or call the service hotline.

2. **Online Company Search**:
– **Suzhou City Enterprise Information Database (EIDB)**: You can access this database through official city websites, MIIT’s portals, or sometimes using third-party company search engines.

3. **Verification Documentation**:
– **Business License**: This is the primary document that confirms a company’s legal status in Suzhou.
– **Tax Registration**: Companies are required to register with local tax authorities. This documents their taxable presence in the city.

4. **Physical Inspection** (Optional):
– If needed, you can request an on-site visit by MIIT or authorized local agencies.

Remember that verifying a trade company typically involves a combination of online research, official documentation checks, and potentially physical inspections.