The Xian HV apparatus institute, China's HV apparatus nets and Chinaelectrical equipment industry association HV switch , called the national powergrid corporation, China electrical science institute, Xian high voltageapparatus institute, Xian jiaotong university electrical engineering college andsome industry backbone enterprise and other experts together, spent more thanone year to write the book the level of domestic and foreign HV switchgear (the fifth round).It is a very authoritative scientific handbookby fully display the developing dynamic and research level of HV switchequipment at home and abroad. The book in inside front cover prominentlyintroduces the development of Ningbo electric appliance Co., LTD. The book insecond front cover prominently introduces the latest results from Xingbang¡¯sR&D. Specific as follows graph: