Situ concrete hollow floor in a modern building in the social and economic benefits are obvious. 1, lower floor height, Templates no beam, high beam width to be saved, 10 layers can save 4.5 to 7.0 meters, can build more than one or two layers. 2, save the amount of concrete span of 5 meters above the sky should be the heart floor, floor area per square meter of concrete amount of savings. Spans about about saving hollow floor picture, shaped Beam save up 0.01-0.22m / m23, save steel with rates of more than 5 m span in the amount of steel slab save (beams, plates, bars all included in the column) 5-20%. 4, under the shed to save the cost of renovation is not present beam edge, reducing beam plastering, improve indoor decoration effect, save 2-6%. 5, to reduce the template into the floor below per square meter of floor space not beam into the number of templates can be less than the original grid - beam floor up to save the template 0.3-1.2m2 / m2.6, construction speed, simple formwork cast hollow floor, Reinforced all straight, the speed of construction on each floor for 1-2 days in advance. 7, saving wall material to a non-load-bearing walls hollow floor load-bearing walls, interior walls thinner, lightweight wall installed by the users themselves, saving 20-37% of the total masonry. 8, increase the use of non-load-bearing walls to change the area of ??load-bearing walls, interior wall thinning, or cancel indoor wall, increased use of space 0.03-0.08m2 / m2. Yancheng Yingtian Materials Co., Ltd. sells hollow floor products, new and old customers here. Living space is closely related to the interdependence of space and architecture. With the social and economic development and people's living standards improve, all types of building towards the direction of diversification, they use a traditional piece structure frame beams, plates program, which greatly restricted the clearance height of the building, reducing the its function. How to achieve the construction of a large room, large span, large loads, long plagued the construction industry problems. Situ concrete hollow floor advent of effective solution to these problems, while BDF thin-walled tubes, thin-walled case, EPS lightweight solid body fill for in-situ concrete hollow floor provides a reliable, stable quality within modular forms. It can save the amount of concrete, reduce construction structural weight, reduce project costs, improve seismic performance and other effects; can more easily achieve humane off, increasing the use of space; the same structure can be reduced in ensuring the use of conditional layers headroom high, there are highly restricted area may be increased to 10% of the number of floors. Applications embedded thin-walled tube, thin-walled box, in-situ concrete hollow floor junction lightweight solid body fill line with national "energy-saving and land-building" and building "four new" construction of industrial policy, with good economic and social benefits. After the concept of analysis, experimental research and engineering practice has been used summary, the use of thin-walled tubes, thin-walled box, in-situ concrete hollow floor structure filled with lightweight solid body has a mature design methods and construction technology; and CECS175: 2004 "situ concrete hollow floor structure technical regulations" and "in-situ concrete hollow floor standard atlas," the promulgation of travel for in-situ concrete hollow floor system provides a statutory basis, hollow floor technology in China will get More extensive promotion and application. Floor should be sky heart, should be days of building materials (certified), Kunming hollow floor should be days by the Yancheng Building Materials Limited. Yancheng should be days of Building Materials Co. (ycytjc.com) (www.ycytjc.com) Jiangsu Yancheng, a leader in building materials processing, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . In the days of building materials should be leading the staff warmly welcome all inquiries negotiations to create the building materials should be days of a better future.