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, Shekou
Address
B Building, Guanghong Meiju, Number 163 Pingxin North, Hehua Community, Pinghu Street, Longgang District, Shenzhen, Guangdong, China, 518111