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
Unit 1, Building 1, Haizhiyun Valley, No. 2094, Shenyan Road, Tiandong Community, Haishan Street, Yantian District, Shenzhen, Guangdong, China