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
Building 15, Xingshangzhi Valley Industrial Park, No. 299 Liantang Avenue, Shanghu Town, Changshu City, Suzhou City, Jiangsu Province, Suzhou, Jiangsu, China