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 1, Building 4, Haogu Industrial Park, No. 6-7, Guanguang Road, Baihua Community, Guangming Street, Guangming New District, Shenzhen, Guangdong, China