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
3rd-4th Floor, Qinli Technology Compound, No. 2, Beiyuan 2nd Road, Lianhu Second Industrial Zone, Tangxia 523712, Guandong, Dongguan, Guangdong, China