20 years of accumulated achievements and experience. The most reliable standard full-scale water collection type side groove. We offer a wide range of products. Completed a completely new, small gutter The two-part structure of the curb-integrated lid and U-shaped waterway brings various features. Commercialized the optimum drainage structure based on experimental data from industry, government and academia. Maximize the function of drainage ditch pavement. * Only available in the Kinki area. The conventional concrete gutters are made of steel. Reduce construction costs with the ultimate small cross section and light weight. Simple structure and high durability. Steel gutter with a cross-section design. A unified circular waterway developed by introducing the know-how accumulated over the past 30 years based on the consensus of member companies nationwide. * It will be handled in areas other than the Kinki area. The inorganic concrete surface can be expressed in a landscape-friendly masonry or natural stone style. A flush toilet that can be installed even in places without water and sewage. Efficient and clean water treatment with a regenerative circulation system. We offer a wide variety of products, both permanent and temporary. Supports various uses and budgets. The power generated by the solar module is stored in the battery for night lighting. LED lighting that contributes to reducing replacement costs. An underground rainwater storage tank with a high porosity is formed by stacking plastic rainwater storage materials and surrounding them with an impermeable sheet. greeting Company Profile access 2013.12.02 Free-gradient side groove "WIN side groove" Ipros started to be published 2013.11.19 Manufacturing technology database site posted on Ipros 2013.11.02 Small drain gutter Good Rain Continue to list Soil Industry Co., Ltd. Products / Services Document request download About us Job listing Contact Us