To verify a trade company in Dongtai, a systematic process is followed. Here’s an outline of the steps:

1. **Check Official Sources**: The first step is to visit the official website of the Dongtai municipal government (usually under ‘Industrial and Enterprise Department’). This will provide accurate information about registered companies.

2. **Search Government Registry**: If you don’t have access to official sources, you can search the government registry for trade companies. This might require a formal request or access through authorized data providers.

3. **Verify Company Documents**: Once you have the company’s details from either source, verify their authenticity by examining relevant documents such as business licenses, registration certificates, and financial records.

4. **Contact the Company Directly**: If you’re still unsure about the verification process, consider contacting the trade company directly through official channels or provided contact information.

Remember, verifying a trade company can take time, but following these steps should help ensure accuracy in your findings.