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
514, Floor 5, Building 1, Pansheng Bio-Pharmaceutical Industrial Park, No. 1, Gangyuan 8th Road, Suncun Street, Jinan, China (Shandong) Pilot Free Trade Zone