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 305-2, South Side Floor 3 Li Shi Building No. 7 Sheng He Road Guan Tai Avenue Nancheng Street Dongguan City Guangdong Province, Dongguan, Guangdong, China