Shenzhen Chisheng ElectronicScience and technology Co., Ltd is the high technology enterprisewhichspecializes in audio electronic productsdesigning and producing. We have rich experience in field of active noisecancellation headphone, strong background in blue tooth technology andnetwork communicationproducts. Our products -CS serial activenoise cancellation headphone, music ear phone, are self-developedwith independent intellectual property right.   We not only pursue perfectquality,high efficiency but also pursueenvironment-friendly. Active noise cancellation itself is eliminatenoise pollution. And all of our materials are in line with the ROHSstandard, non-lead, non-mercury.CS let the music flowing in the quietworld.  Excellent noise cancellation technology and feverlevel sound achieve CS as a leader of perfect audio productsenterprise in China. We ensure we will devote ourselves to supplyyou the high quality products with best price.