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 Xingzhuang Road, Miaozhuang Industrial Park, Jiangning Street, Jiangning District, Nanjing City, Jiangsu Province, Nanjing, Jiangsu, China