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
Yantian Port
Address
Room 301, 3 / F, Zhengtong Pioneer Park, No.12, Puxia Road, Henggang Street, Longgang District, Shenzhen, Guangdong, China