Proton therapy is the most advanced, accurate and securest radiotherapy for multiple types of tumors. Proton enters the human body at top speed and hardly reacts with normal tissue or cells. When the proton reaches the target site, it stops and releases the maximum energy to reach the Bragg peak to kill the cancer cells.Designed by: Yuntao Song, Dongge Zhao, Lu Liu, Jianghua Wei and Dingliang Chen of ZCO Design Co., Ltd. for Hefei CAS Ion Medical and Technical Devices Co., Ltd.Contact: zhengpingping@zco2006.com; www.zcodesign.com