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
Room 9A, 5th Floor, South Unit, Building 8, Phase II, Yida Technology New Town, No. 239 Lianhua Street, High-tech Zone, Zhengzhou City, Henan Province, China