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
2/F, The First Ridgepole, Qiggong Ye Gongxiao Company-Workshop, Xingweixinghua Road, Fuyong Street, Baoan Zone, Shenzhen, Guangdong, China