北京电视台
China 3D TV Test Channel () was a Chinese television channel which broadcast digital 3D television content from China Central Television, Beijing Television, Tianjin Television, Shanghai Media Group, Jiangsu Television and Shenzhen Media Group. It was launched on 1 January 2012 and was shut down on 30 July 2018, being replaced by CCTV-4K, a television channel which broadcasts 4K content solely from CCTV.