In 1997, just before the market slowdown with foreign companies in the production and sale of rubber, micro deceleration zone, it is equipped with reflective beads. Abroad it has a nickname called "lying policeman", meaning that the vehicle here, just to see the police as to slow down. At that time, mainly to do with cement and cast iron deceleration zone. Rubber slowdown with a certain softness, no strong sense of turbulence hit the vehicle, trunking deceleration zone, shock, shock-absorbing effect. During the day to see black and yellow, in the evening to see the reflective beads reflect light, speed humps, especially eye-catching. Installation is simple, easy maintenance. Later, many of the country's rubber manufacturers imitate this style. The physical properties of rubber deceleration ridge elongation surface material elongation at break of not less than 200%, the rubber on the road and urban road use deceleration ridge surface material elongation at break of not less than 250% of the tensile strength rubber deceleration ridge surface tensile strength of not less than 6.0 MPa, the rubber on the road and urban road use deceleration ridge surface tensile strength should not be less than 8.5MPa Shore A hardness of the rubber deceleration ridge surface material of Shore A hardness should be in the 65-85 range. The tear strength of the rubber deceleration ridge surface material tear strength of not less than 20 kN / m abrasion loss rubber deceleration ridge surface material abrasion loss should not exceed 0.8 cm3 / 1.61 km. Impact elastic rubber deceleration ridge impact resilient surface material should not be less than 20% of the retroreflective performance rubber deceleration ridge unit is on the vehicle traveling direction retroreflective performance should not be lower than the requirements specified in Table 1. Speed ??humps | power safety equipment | manual transmission through the deceleration zone, Xinxiang County Economic Development Zone by the power of the security equipment business. Speed ??humps | power safety equipment | manual transmission over the deceleration zone Xinxiang County Economic Development Zone power safety equipment operators (www.xxlmdgs.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, Contact: Zhang.