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
4th Floor, Building a, Guangming Zhizao High-Tech Park, Zhenmei Community, Guangmingnew District, Shenzhen 518107, Shenzhen, Guangdong, China, 518107