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.
Nearest Port
Xian, Qingdao
Address
a - Room 2304, Building Zhongtianguoji, No. 269 Taibai Road South, Xi'an, Shaanxi, China, 710068