North of East China Sea
Northeast China and east of North China
south of North China Basin
the north of North China
Air Traffic Management Bureau of East China
民航华东空管局
中国民航华东地区空中交通管理局上海气象中心
Beijing Graduate School of East China Petroleum Institute
coastal region of East China
coastal shelf of East China Sea
Comprehensive Geological Party of East China Metallurgical Geology Bureau
Continental shelf of East China Sea
Department of Resource and Enviornment Engineer of East China Geological Institute
East China of Geographic Institution Surveying Dept
Editorial Office Of Journal Of East China Geological Institute
Entomological Journal of East China
exploration region of east China
Faculty of Economic and Management of NorthEast Forest University
gas reservoir in north-east of Sichuan