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
Jojoyseiko Technopark, No. 90 Yue Ming Road, Sanhe Village, Tonghu Town, Zhongkai High-Tech Zone, Huizhou City, Shenzhen, Guangdong, China