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
No. 2301, Building 89, Guanhe Shengshi Mansion, No. 1088 Gaoyang Road, Sanjiang Street, Shengzhou City, Shaoxing City, Zhejiang Province, China