Round Verbund Kanaldeckel

(1)Meet the need of enviroment,reduce the mining of mine. (2)Suitable for enviorment temperature for -40 +80 degree celsius. (3)Anti-abrasion,not inside out,no noise,wearable,life span more than 30 years,low price. (4)Beautify the city,different colors can be applied. (5)Anti-theft,the material is no use for second time,so no one will steal it. (6)Light weight,easy to install and open. (7)Anti-press,high strength,good tenacity,anti-impact.The Heat-proof,cold-proof,acid-proof are better than the steel products and concrete products. carton box for outer packing