2004TB/T 1456-2004 Railway applications-Rolling stock-Characteristics and tests of pantographs for main line vehicles
TB/T 1456-2004 Railway applications-Rolling stock-Characteristics and tests of pantographs for main line vehicles was changed to GB/T 21561.1-2008 Railway application.Rolling stock.Pantographs.Characteristics and tests.Part 1: Pantographs for mainline vehicles.