Rainwater trunk line, junction box, extra-large box, collection box.

Because it's precast, construction speed is fast! No need for on-site curing!

A large manhole that looks small compared to people! Due to construction on a residential road, early restoration is necessary! Since it is factory-manufactured, the quality is stable. "Convergence manholes, extra-large manholes, and catch basins" are essential for the construction of rainwater trunk lines. These large products are very difficult to install on-site (deep excavation, massive rebar, prolonged road occupation, etc.), so we propose "overwhelming construction time reduction and safety with large precast products." ▪ Overwhelming construction time reduction: The construction of large manholes that usually takes weeks can be shortened to just a few days. This accelerates the lifting of road restrictions and minimizes the burden on nearby residents. ▪ Significant improvement in safety: Long-term work in deep pits is unnecessary. This reduces the risk of collapse and falls, making on-site safety management easier. ▪ Cut excess costs on-site: You will be freed from securing formwork and rebar workers, as well as arranging concrete delivery trucks.

Gutters and U-shaped gutters