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
B907c, 9th Floor, Building 2, Jiabao Plaza, No. 2, Changbin West 4th Street, Xiuying District, Haikou City, Haikou, Hainan, China