Beijing Tongre is the only company of Long Energy Group construction and transformation of energy conservation as the main content of the professional construction company, have construction engineering construction general contracting 3 qualification, municipal utilities engineering construction general contracting 3 qualification, professional mechanical and electrical installation project construction contract level 3 and the environmental protection engineering contracting three qualities. Beijing Tongre can undertake thermal engineering, environmental protection desulfurization and denitration transformation, water supply and drainage civil construction and mechanical and electrical installation engineering, the company has rich project construction experience. It has successfully completed a number of key thermal engineering projects, such as renovation of old huairou district pipe network, construction of Lanzhou Xincheng heating pipe network, Tianshui intercity heating pipe network, Xining Tiancheng heating pipe network and Liaoning Putian heating pipe network. Beijing Tongre has more than 20 engineering and technical personnel with rich experience in site management and engineering accounting.