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
1389, 1st Floor, East Office Building, No. 45, Beijing Road, Qianwan Bonded Port, Qingdao Zone, China(Shandong), Qingdao, Shandong, China