Manhole is often overlooked by ordinary passers-by, but their importance to the daily work of society should not be ignored.

It is estimated that there are 14,12578051 manholes in China (2014).

Manholes are most commonly used to allow access to sewer lines for maintenance and repair, but are also used to obtain water, electricity, telephone and natural gas facilities. Maintaining the condition of these manholes is critical to the continued success of our city.

But, unfortunately, many of our manholes have been overlooked during sewer system maintenance, which has caused severe decay.

In China, it is estimated that 20% of manholes are between 30 and 50 years old, and more than 3 million manholes are so degraded that they need to be repaired or replaced immediately.

Compared to the cost of replacing all 20% of manholes, Horse Construction's carbon fiber wrap system saved 50% of the cost. In addition, because Horse Construction's carbon fiber system repaired manholes without causing any road closures, the county saved months of downtime and avoided wasting near water by creating new manholes.