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
6th Floor, Building a, No. 57 Liuxian 2nd Rd, Xinzheng Huafeng Industrial Zone, Bao'an District, Shenzhen City, Shenzhen, Guangdong, China