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
Second Floor, Workshop No. 5, Zhen Bao Industrial Zone, No. 137, Shihuan Road, Longteng Community, Baoan District, Shenzhen City, Shenzhen, Guangdong, China
