Yancheng Yingtian Building Material Co., mainly engaged in EPS (polystyrene) lightweight filler rod, filling block. Let us look at the history of polystyrene and polystyrene (Polystyrene hollow floor factory, called PS) is a colorless, transparent thermoplastic. Having a higher glass transition temperature of 100 degrees Celsius, it is often used to make a variety of water need to withstand temperatures of disposable containers, foam and disposable lunch boxes and the like. Chemical properties of the chemical stability of polystyrene is relatively poor, can be a variety of organic solvents to dissolve hollow floor pictures, will be the acid and alkali corrosion, not resistant to grease, after exposure to ultraviolet light and easy to change. The physical properties of polystyrene hard and brittle texture, colorless and transparent, and a variety of dyes mixed to produce different colors. History In 1839, the German Eduard Simon first extracted from natural polypropylene resin. In 1930, BASF began commercial production of polypropylene in Germany. In 1934, Dow began production of polypropylene in the United States. In 1954, Dow began producing polypropylene foam. 1) Since situ concrete hollow floor thin bottom flange, pouring flange prone nowadays balloon, bubble, so when pouring concrete slump of not less than 150mm, concrete coarse aggregate maximum diameter of not greater than the lower flange thickness and rib width of 1/2 can not be greater than 31 mm concrete hollow floor and the cloth should be synchronized with the vibrator. 2) concrete pouring construction equipment shall not be placed directly on the top of the box. Should minimize concrete pumping concrete machinery placed directly on top of the box. Should be pumping concrete to minimize drop height of concrete, it is appropriate template whereabouts cushion concrete impact. 3) pouring concrete enclosure will withstand greater buoyancy, so that when the top of the box there is no need to lay anti-floating steel reinforced, reinforced with wire bracket and the template need a reliable connection. Need reinforcement and templates installed between pads to ensure the top flange thickness of the concrete. Anti-floating steel bar diameter and spacing, Rachel anchor point distance should be determined after the calculation of the construction program. grf hollow floor, Changzhou 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!