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
Industrial Land No. 21-23, Hongxing Industrial Park, North Hongxing Avenue, Mulong Street, Xingyi City, Qianxinan Buyi and Miao Autonomous Prefecture, Guizhou P, Qianxinan, Guizhou, China