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
2/F, No. 8, Liuhualing East Road, Luwu Industrial Park, Zengbu Village, Chashan Town, Dongguan City, Guangdong Province, 523383, Dongguan, Guangdong, China