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
Shenzhen Port, Tianjin Port, Ningbo Port
Address
Room 1001, 10th Floor, Building 1, Courtyard 15, Hongjunying South Road, Chaoyang District, Beijing, China