To verify a trade company in Yangchun, a process typically involves the following steps:

1. **Due Diligence**: The first step is an extensive investigation of the company. This includes verifying the company’s registration documents such as business licenses, company registration certificates, and any relevant industry permits.

2. **Online Research**: Use official government databases and reputable business directories to verify the company’s information.

3. **Contact验证**: Reach out to the company directly through their provided contact details (such as phone number or email). This can help confirm their authenticity.

4. **Consultation with Experts**: If necessary, consult with legal professionals, industry experts, or even trade associations that are familiar with Yangchun’s business landscape.

By following these steps, you should be able to verify the authenticity of a trade company in Yangchun.