Telephone：(86) 18682158983
                    (86) 15013815121 （Same as WhatsApp）

Email: yu.martin-usp@vip.163.com
           anquanyong@szzwgk.com

Address: 3/F, Building-B Dongxin Science Park, Honglangbei 2nd Road,Bao'an District, Shenzhen, Guangdong, China