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. 1610\1611, Unit 3, S Building, S5\S6\S4-1, Yuexing Business Centre, Economic Development Zone, Xuzhou City, Jiaansu, Xuzhou, Jiangsu, China
