JM-MR106-IC composite inner cover is designed for JM-MR106 series manhole cover products, which is used for preventing the people from falling into the manhole.

JM-MR114D-F-IC composite inner cover for JM-MR114-F composite floating manhole cover, to prevent pedestrian falling into the well.
The double cover design is very useful. When the main cover is damaged, the sub cover can also act as a temporary buffer to prevent the risk of falling. There are four leak holes to prevent water from filling up.

JM-MR105-IC composite inner cover is designed for JM-MR105 series manhole cover products, which is used for preventing the people from falling into the manhole.
It has good bearing capacity, high toughness, and improves the safety of the manhole cover.