Shenzhen Qili Audio Application Co., Ltd. (qdc) is a innovative high-tech company based on 10 years police and military products research technology of Shenzhen Qili Industrial Co., Ltd.(QDC) and combining outstanding professional audio application website. The company is dedicated to develop high-end qdc brand customized in-the-ear balanced armature monitor with the support of celebrity of music section. From research to handcrafts, our team never misses any details, with dedicated work attitude and unwillingness mediocrity young concept, combines nuanced and bold innovation flawlessly, strives to make the company become the world's leading audio device manufacturers.