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
8/F, Factory Building 1, Changshun Industrial Park, No. 26, Langsha Avenue, Luocun, Shishan Town, Nanhai District, Foshan, Guangdong, China, 528000