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.
Nearest Port
Tianjin Port, Qingdao Port, Dalian Port
Address
C1-707, Xuhui Center, Jinguan North 2nd Street, Shunyi District, Beijing, China, 101300