Hochschule Baden-Württemberg Science and engineering degree certificate（证件网:ｚｊｗ２１１.ｃｏｍ)平凉Kentucky Community and Technical College International Business Certificate-Conservatorio di Bergamo国际商务文凭证书（证件网:ｚｊｗ２１１.ｃｏｍ)Central Washington UniversitydiplomaNw