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.
Address
Cn, Henan, Zhengzhou, No. 69, Row 7, Area B1, East Yard, Shimao-Wanhuocheng, Longhu Town, Xinzheng, Zhengzhou, Henan, China