Headquarter Guangzhou

   Add:Room 708 Innovation Building,Tian An Technology Park, Panyu Zone, 

   Guangzhou City,China  

   Contact : Liu Yun

   Tel No：0086-189 2950 0780

   Email Add：yun.liu@lettersemi.com

   Hefei Office

   Add:Room 1305 No.2 Building,Bona,  Innovation Street, Shushan zone, 

   Hefei City,China 

    Contact：Liu Qilin

    Tel No：0086-180 5553 8778

    Email Add：qilin.liu@lettersemi.com

Beijing Office   

    Add:Room 320 Main Building Datang Hi-Tech Park, Tongzhou Zone, 

    Beijing Capital,China

    Contact：Guo xiuxian

   Tel No：0086-136 0286 9 588 

   Email Add：xiuxian.guo@lettersemi.com