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. 255 Shenjiabang Road, Baihe Town, Qingpu District, and Anfeng Industry Zone, Oubei Town, Yongjia, Wenzhou, Zhejiang, Shanghai, China