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
Room 1104, Building 12, Cuizhu Garden, Ningxing Mingdu Phase 5, No. 238, Shenwan Avenue, Shenwan Town, Zhongshan, Guangdong, China
