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
Address
Room 3005-3006, Building 1, Hengda Metropolitan Plaza, No. 17 Huancheng South Road, Longgang District, Shenzhen, Guangdong, China, 518000