To verify a trade company in Longhai, the following steps can be taken:

1. Check the business registration number: A trade company should have a valid business registration number. This number will be displayed on their website and may also appear on government records or official certificates.

2. Verify the company’s address: Trade companies often operate from physical addresses instead of virtual ones. To verify this information, you can visit the company’s website and look for an address listed prominently in the “Contact Us” section.

3. Check the company’s phone number: Trade companies often have a local presence and may maintain contact with their customers or clients through phone numbers. To verify this information, you can call the company’s phone number listed on their website and verify that they are available and able to assist you.

By following these steps, you should be able to verify the trade company in Longhai from their website and ensure that they have a valid business registration number, an active phone number, and a local presence.