Environmental indexes are increasingly crucial for the future development of our products. In other words, even if a product boasts high cost-performance, it is not up to par if its pollution index is high. Therefore, it is of great necessity to clarify:

Production Pollution Index

It goes without saying that the production process of resin manhole covers involves numerous pollution factors, including high temperatures, odors, and smoke, resulting in very high indices; cast iron covers are next, involving high-temperature melting, while steel fiber concrete covers essentially have no production pollution.

2. Application Process Pollution Index

During actual use, resin manhole covers may face environmental issues such as corrosion or unforeseen chemical reactions; cast iron covers encounter oxidation and rusting, leading to certain pollution problems. In contrast, steel fiber concrete manhole covers almost pose no pollution risk.

3. Recycling Index:



So, whether it's in terms of cost or pollution risk: the recycling costs for cast iron and resin manhole covers are higher than those for steel fiber concrete manhole covers.

Through the above three factors, steel fiber concrete manhole covers have the highest environmental index, followed by cast iron covers, and resin covers are the lowest.