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 1343, Bldg 1, Yingxiang Spring Commercial Bldg, No. 220 Fuyuan West Rd, Liuyang He Str., Kaifu Dist, Changsha, Hunan, China