Beijing lvyuan sail environmental protection equipment limited liability company under the best of Beijing Sino-US groups, is a set of environmental protection equipment and technology R & D and manufacturing companies professional installation. Enterprises located in Tongzhou District of Beijing Municipality Lucheng industrial park with a large production base - a good industrial base, the site of 135 acres. I Steel Corporation is China's Association, the Architectural Society of China, new wall materials professional Committee, the China Association of noise insulation, China Building Decoration Association, the Professional Committee of Beijing building energy conservation, Beijing Interior Decoration Association and a number of associations of board directors and members units.