小西興發 List of Products and Services

The luminescent stone "Lumina Stone" uses a high-brightness, long-lasting glow type of environmentally friendly aluminosilicate phosphorescent material. It absorbs and accumulates sunlight or ultraviolet light from fluorescent lamps during the day, and it emits a bright glow for a long time in the dark. Additionally, it is safe for both the human body and the environment, making it easy to use for gardening, hydroponics, and Christmas decorations.

• stone

NeoCoal is a 100% natural gardening soil that can purify the air, concentrated with the power of charcoal. It uses charcoal from cedar and cypress trees sourced from Kochi Prefecture, which is home to the clear Shimanto River. NeoCoal has the ability to purify air and water, creating a comfortable living environment. It is an "evolved charcoal" that is gentle on nature, living, and people.

• Earthworks
• Pile and foundation work

At the water purification plant, raw water taken from dams and rivers is processed through several stages to produce tap water for households. The final stage includes a pond called a "filtration pond." The filtration pond consists of layers of sand and gravel, and it is an installation that removes fine suspended particles that could not be eliminated previously as the water passes through it. The sand and gravel used there are referred to as "filter media."

• Tunnel construction
• Earthworks
• Pile and foundation work

Stable supply enables low-cost domestic production. We stock and sell various types of silica sand mined from different regions of Japan for use in blasting, construction materials, fluidized bed furnaces, and more.

• Earthworks
• Pile and foundation work