Shenzhen Academy of Aerospace Technology is funded and established by China Aerospace Science and Technology Corporation, the Municipal Government of Shenzhen and Harbin Institute of Technology in 2000.Magus is currently the only active noise canceling headphones offered by the Chinese aerospace research and development, which can achieve reducing the high Intermediate and low the full-band noise at the same time. It is personal hearing protective equipment with very comfortable wearing. It is a high-tech product which has the cross time significance inpersonal hearing protection areas.