Shenzhen Dowesion Technology Co., Ltd Address: No. 22, Fengtang Avenue, Fuyong, Bao'an District, Shenzhen, Guangdong, China Service hotline: +86-0755-33160359 Fax: +86-0755-29195048 Parts sales hotline:+86-13428935807 Mr. Lu Email: dwxsmt@126.com