E-mail: yaditecasting007@yahoo.com Feaures: 1. Environmental protection With raw material non-toxicity, it will not influence to user. 2.Saving mine resource It is made by regenerated resin or regenerated plastic raw material, which save application of cast iron. 3.Longevity Acid-alkali and corrosion resistance; anti-rust; insulation; anti-abrasion; weatherability; excellent anti-pressure capability. 4.Competitive price The price of compound manhole cover is lower than stipulated standard cast iron ones. 5.Light weight The weight is 1/3 lighter than cast iron ones so that it is convenient to transport, install, rush repair; construct easily and reduce working intensity. 6.Nice appearance Rich colors; the cover is not sprayed in surface but painted in whole material so that the colr can keep lasted. 7.Anti-theft Non-recycle, anti-theft naturally; the lock attachment can prevent tunnel products from losing, therefore city blackhole can be stopped totally. if you are interested in our product, pls mail us . E-mail: yaditecasting007 at yahoo.com msn: yaditecasting001 at hotmail.com