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
Room203 of Apartment No. 1, Building No. 2, Zhengshang Jinyushijia, 200meters South of Crossing of Xinzhong Street and Kelong Street, Xinxiang, Henan, China