To verify a trade company in Daqing, China, you would typically follow these steps:

1. **合法性查询**: Start by checking the company’s official registration information. This can be done through the local government’s business registration website.

2. **工商信息核对**: Verify the company’s details listed in the Business License Information System (BLIS), managed by the State Administration for Industry and Commerce (SAIC).

3. **实地考察**: If possible, visit the company’s registered office to inspect their premises, signage, and other identifying features.

4. **网络口碑调查**: Check online reviews and ratings from platforms like Google My Business or industry-specific review websites.

5. **咨询专业机构**: In some cases, seeking advice from accounting firms, legal consultants, or trade associations can provide additional assurance.