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
5th Floor, Block a, Building 2, No. 200 Tianfu Fifth Street, Chengdu High Tech Zone, China (Sichuan) Pilot Free Trade Zone, Chengdu, Sichuan, China, 610041