China factory: Phone: +86-755-23488972 +86-755-29828431 Fax: +86-755-33286272 Sales: sales@3welltech.com Supports: Supports@3welltech.com Address: Building 3, longhua new technology industrial areas, Longxin Road Baoan District Shenzhen 518131 China Sales Department: General Manager: Bob Guo Mobile phone: +86-13418692237