This product has below advantages:

1.  Resist Burglar : This product does not carry any Steel bar or Iron made materials. No obsolete and recycle value. Burglar resistance function is good.

2.  Resist weary and impact:  This product is well designed and developed with reasonable and acceptable pressure up to 40 tons, with no damage and can replace the Iron made Manhole Cover and Water Grating.

3.  Good chemical function: It can withstand sour, salty, anti-corrosion, hard wearing and is suitable for road for multi purpose usage.

4.  Resist ageing:  This product is good for sun shine and heavy rains. No ageing and smash. There is no damage report for using over 10 years period.

5.   Resist for jump up noise:  This product is made with mould with military techniques. Product design is accurate. No jump up noise and no position shift against vehicles come across.

6.   Weather-temperature affection is less: This product can accept tolerance at + 300 C, low temperature - 80C. No swell, No shrink, No shape change which is suitable for any road's usage.

7.   Easy to install and unlock:  This product can be made with different colours and can be matched with road's colour for beautify the city. 

8.   Price is advantage:  The price is 20% less against Plumbago Steel Bar or Iron made Manhole Cover.