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
L4-010-24, Lncubator No. 3, 4th Floor, Export Commodity Display Center, Linyi International E-Commerce Lndustrial Park, Lanshan Dstrict, Linyi, Shandong, China