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
No. 503 of Building 1, Fortune Plaza No. 1394 on Hanghai East Road, Zhengzhou Area (Jingkai) of Henan Pilot Free Trade Zone, Zhengzhou, Henan, China