A visit — yours or an inspector's — is the surest check on a new supplier. Send a date and what you want to see; the request reaches them as an enquiry you can track.
Nearest Port
Shanghai port, Qingdao port
Address
No. 2, South Row 1, Electronic Appliance Industrial Park, Huangyang Street, High-Tech Development Zone, Zhengzhou, Henan, 450000