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
Floor 2b, F Buliding, Jingya Technopark, First Industrial Park B9, Baihua Community, Guangming Street, Guangming District, 518000, Shenzhen, Guangdong, China