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1.Environmental protection
With raw material non-toxicity, it will not influence to user;
2.Longevity
Acid and alkali corrosion resistance; Anti-rust; insulation; anti-abrasion; weatherability; excellent anti-pressure capability;
3.Competitive price
The price of compound manhole cover is lower than stipulated standard cast iron ones;
4.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;
5.Nice appearance
Outstanding dying, rich colors; the cover is not sprayed in surface but painted in whole material so that the color can keep lasted; With clean, smooth surface, it will be consistent with the lawn or ground, beautiful and functional;
6.Anti-theft
Non-recycle material, anti-theft naturally; the lock attachment can prevent tunnel products from losing, therefore city blackhole can be stopped totally;
7.Low noise
Harsh noise and rebounding free when car rolls
Manhole Cover
