See Construction, work and methods's detailed category ranking
A retaining wall unit boasting reliability. Functionality and beauty showcase the power of design!

It expresses a unique texture with a deep aging-style finish. [Responsible construction]

For the foundation of air conditioning outdoor units, eco-cute heat pump units, and oil tanks, as well as for various piping supports. For securing vending machines.

Ministry of Land, Infrastructure, Transport and Tourism: Compliant with the Public Building Equipment Construction Standards! Lineup of φ900 and φ1200!

Ideal for direct finish waterproofing repairs in self-propelled parking lots! High-strength, ultra-fast curing polyurethane is applied by spraying. Lightweight and wear-resistant for parking lot waterproofing.

Introducing an environmentally friendly wastewater treatment device that neutralizes mortar and ready-mixed concrete containing wastewater!

The Tokai Spiral manufactured stainless steel drainage manhole (TS stainless steel drainage manhole TSDR-) can be produced and proposed in various shapes starting from a single unit.

Huh! Are you going to leave that steel plate behind? What a waste!

A construction method that allows for the replacement and expansion of piping branches and valves with minimal water drainage!

After the body is cast, a modified asphalt sheet is applied to ensure reliable waterproofing functionality (civil engineering underground and building underground waterproofing).

This is a method of performing waterproofing work "in advance" using soil retention and excavation support as a base before the placement of the structural concrete for underground structures. It is a space-saving and highly efficient method due to the narrow excavation area.
A must-see for nursery and kindergarten staff! Enjoy a more comfortable sidewalk environment with cork thermal insulation pavement! Product catalog with installation examples is currently available!

Ideal for aging bridge construction! Used for seismic reinforcement work, performance restoration work, and also for corroded steel structures.