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. 402, 4th Floor, Building a, Yiyuantong Park, No. 6 Zhonghao Avenue, Xiangjiaotang Community, Bantian Street, Longgang District, Shenzhen, Guangdong, China