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
Room 201, Bldg 111, Minsheng Industrial City, 371 Huimao Rd, Shangcun Community, Gongming Subdistrict, Guangming District, Shenzhen, Guangdong, China