Supply Chengdu security covers, manhole cover, Chengdu, Chengdu, polymer covers covers Chengdu, Chengdu, polymer covers manufacturers 
 This polymer composites and covers the largest one-time molding and irreversible, the thief go, there is no recovery value. Yesterday (18), 2007 National Association for Quality Work Conference of China Association for Quality Work Minister Fan Tianshun said this "made in Chengdu" green, practical high-strength covers, the widespread use of the city, is expected to fundamentally, to curb the phenomenon of the thief to steal the city covers. 
 Easy to use a few years to reach covers 50% of 
 Polymer covers in the end what? This covers mainly added to the polymer materials from the enhancement of glass fiber and other ingredients, and built-in steel keel molded at high temperatures. With cast iron covers, light weight, high strength, environmental protection, etc., reinforced materials, traditional cast iron covers 1/4. Cement, rubber covers, has strong load capacity, corrosion-resistant, flame retardant and other advantages. This covers in Guanghua Road and other places to promote the use of the next few years, is expected to reach 50% of the city covers. 
 Six days of the theft two thieves smashed open two 
 This product is the biggest "selling point", in fact, to prevent the thief to steal and smash make money. Since this covers are polymer materials, the thief smashed to steal reinforced to sell it is difficult. If it is cement reinforced covers, within two days of two thieves smashed 16 from stealing reinforced sold. This covers six days of the two thieves also smashed two is not broken. Therefore, the thief steal this covers time-consuming, high cost, and waste recycling is not recycling this can not use the covers. This can deter thieves to steal the city covers fundamental phenomenon, which attempts to prevent a "man-eating" trap left in the stolen covers. Chengdu manhole cover is missing in the end how serious? It is understood that the public currently has more than 20,000 wells, if you count the telecommunications, gas companies, their respective covers, the city should be no less than 100,000. As early as 2004, the loss of municipal facilities management office area covers more than 130 water grates cover the loss of more than 700.