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.
Address
No. 9 Floor, Yongchang Building, No. 43 Lixin Road, Nanwan Street, Longgang District of Shenzhen City, Guangdong Province, Shenzhen, Guangdong, China