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
8f-2, Building 2, No. 22 Fuqing 2nd Road, Hengdong Village, Henglan Town, Zhongshan City, Guangdong Province, Zhongshan, Guangdong, China