600 Features: strong silent type combination concrete slab 1. Bonding Shear, special closed type design, the shear strength of good 2. The need to touch the brush fire retardant coating can achieve 1.5 hours of FRP composite slabs at 3. Closed use phase can provide a larger positive moment resistance 4. Does not require drilling, welding, during the building used to follow the need to let the mobile, remove or reinstall 5. The ends do not require any plug, seamless plasma phenomena, can shorten the construction period 6. The underside of the floor ceiling of the building do not want, the more beautiful Common thickness: 1.0 floor boards, Liaoning Dragon Steel Co., Ltd., is a subsidiary of Long Roth Holdings, the main producing colored steel plate, composite slabs, rock wool, glass fiber composite panels, polyurethane composite panels, cold-formed C, Z steel. The company has 720 floor boards, 688, closed 600, 750 and other floor boards