QiShengDa industrial development co., Ltd. Was established in 2004, which is specialized in designing, manufacturing ,and marketing of various series tuner,it is a emerging electronics enterprise, we pay more attention to products quality, we have passed the ISO9001:2000 international quality management system and ISO14000 environment system recognition card, we have a group of experienced and excellent comprehensive management personnel and technical personnel, the main products include conventional voltage synthesis, frequency synthesis electronic tuner, multimedia electronic tuner, digital electronic tuner and so on.