Global large-scale retail enterprises, international energy enterprises, international construction and engineering enterprises, the World Bank, the International Red Cross, international urban lighting trade companies, municipal engineering administration bureaus, urban management bureaus, transportation bureaus, various sub-district offices, real estate development enterprises, industrial parks, tourist attractions, engineering construction and installation enterprises, construction engineering companies, large real estate enterprises, energy enterprises, power companies, factory enterprises, construction engineering and design units, system integrates, schools and hospitals, etc.