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
Rm 102, East Office Bldg, No. 45 Pengwan Rd, Qianwan Bonded Port Area, Qingdao Pftz, Qingdao, Shandong, China, 266100