1.Environmental protection
With raw material non-toxicity, it will not influence to user.
2.Competitive price
The price of composite SMC trench cover is lower than stipulated standard cast iron ones.
3.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.
4.Nice appearance
Beautiful appearance and rich colors; the cover is not sprayed in surface but painted in whole material so that the color can keep lasted.
5.Anti-theft
Non-recycle material, anti-theft naturally; the lock attachment can prevent tunnel products from losing, therefore city blackhole can be stopped totally.
6.Low noise
Harsh noise and rebounding free when car roll.
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