With the development of the construction industry in recent years, in-situ concrete hollow floor construction technique was widely promoted into practice, in the shopping malls, parking lots, office, teaching, housing and other public residential and industrial buildings and other large buildings in the design and construction , we have made considerable progress. Situ concrete hollow floor technique is to place hollow mandrel embedded in floor slab floor design, in accordance with specific rules, within the cavity at the site pouring concrete floor slab form. This technique has the floor can effectively reduce weight, improve seismic performance of buildings, reduce project costs, shorten the duration of the advantages, and help to improve the utilization of thin-walled hollow floor clearance space to promote housing insulation, insulation, ventilation, lighting effect. Therefore, favored by the majority of the developers and owners. EPS mandrel built, EPS lightweight filler rod filler block technology bit 1, 2 saving building materials, especially for large-span, large space buildings 3, two-way power transmission grid system 4 cast ribs to reduce weight 5 floor, good 6 using the function, flexibility and user-friendly space 7, flat in the true sense, no ceiling 8, 9 excellent sound effects, building energy-saving effect 10, 11 convenient construction, pipe-laying and convenient 12, thermal insulation 13, shorten the construction period, reduce costs hollow floor, hollow floor, building materials should be days should be days by the Yancheng Building Materials Limited. Yancheng should be days of Building Materials Co. (ycytjc.com) (www.ycytjc.com) strong, credible, Yancheng in Jiangsu Province building materials processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas should be days of building materials will lead into the brilliant and you work for a better future!