Shenzhen Isong Technology Co.,Ltd is a professional manufacturer for active noise cancelling headphone, PC headset, aviation headset, hifi earphone etc..We focus on active noise cancelling area more than 6 years, we have tech team to do OEM&ODM service. Currently we have two long production line to keep fast producing. And we have enough experience to do high-tech product, such as avition headset for pilot. Welcome friend from the world to join our family.