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The Crystal NCP method is an inorganic coating method that uses surface impregnation materials. It aims to restore the functionality and extend the lifespan of aging concrete agricultural water channels, allowing for both repair and anti-corrosion work to be carried out in a single application. 【Features】 ■ Concrete body modification effect: Weak concrete that has become vulnerable due to wear and cross-sectional defects is modified using an alkali silicate aqueous solution. ■ Workability and stable quality: The PCM used complies with NEXCO cross-section repair material standards. It provides stable quality with easy application by simply mixing with USCP liquid. ■ Dense structure and crack resistance: By incorporating high furnace crushed slag fine aggregate, it maintains a dense organizational structure for long-term stability and excellent crack resistance. ■ Wear resistance and prevention of deterioration factor penetration: The application of surface impregnation materials improves wear resistance, water absorption prevention, salt shielding, carbonation suppression, and freeze damage resistance. ■ Improvement of roughness coefficient: By creating a highly dense surface structure, it possesses wear resistance while improving the roughness coefficient without reducing the cross-sectional area of the water channel.

• Agricultural civil engineering works

"SF Guard" is a water-based one-component coating material primarily composed of fluorinated silane. By applying it to porous materials such as tiles, stone, and cement-based substrates, it imparts high durability water-repellent and stain-resistant properties to the surface of the substrate. It is particularly effective in maintaining the appearance of concrete block products, areas around foundation concrete, exterior wall tiles, bricks, stones, and mortar joints, where biological contamination such as mold and moss is significant.

• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods
• paint

The "NK Rust Stabilization Anti-Corrosion Method" is a groundbreaking anti-corrosion technique that allows for the application of treatment agents simply by performing a basic "substrate adjustment" in advance, offering excellent weather resistance and stain resistance. Among the various anti-corrosion methods, the previously labor-intensive "substrate adjustment" has been simplified, enhancing workability and achieving a reduction in total costs! 【Features】 ■ Powerful anti-corrosion effect with two types of coatings: "NK-100," which inactivates rust, and "Seal Coat 007R," which exhibits high weather resistance! ■ Usable for various steel structures (steel substrate) ■ Ideal for outdoor use due to saltwater resistance and weather resistance.

• Reinforced concrete construction
• Special Construction Method
• Other civil engineering services

**Features** The "Crystal Slab Waterproofing Method" is an inorganic hybrid concrete slab waterproofing method composed of a primer made primarily of modified silicate and a topcoat made primarily of colloidal silica, combining waterproofing and freeze-thaw resistance. ■ Waterproofing → Prevents corrosion of concrete slabs due to the water resistance and durability effects unique to inorganic materials. ■ Surface Modification → By modifying the surface to approximately 5mm, it imparts water resistance and freeze-thaw resistance. ■ Freeze-Thaw Resistance → Provides high freeze-thaw resistance through a multi-layer finish of inorganic materials. ■ Non-Combustibility → Unlike conventional products, it forms a non-combustible waterproof layer. ■ Shortened Construction Period → The construction time is short, allowing for a reduction in the overall construction period. It is also adaptable to complex substrate shapes. ■ Safety → The materials used are composed of inorganic substances, ensuring high safety.

• Other civil engineering works
• Waterproofing work
• Roof and gutter construction

"Crystal Stone" is a modifier that creates a protective layer (glass layer) on the surface simply by applying it to porous substrates such as concrete and mortar. The weaknesses of porous substrates include moisture, salt, acid rain, and chemicals. They gradually erode and deteriorate, but by applying "Crystal Stone," the durability of the structure is significantly enhanced, and deterioration can be halted. It is ideal for places that require long-term durability, such as concrete bridge piers that are difficult to replace and factory floors where wear and the adhesion of water and oil are concerns. There are a total of four types in the lineup that can be used according to the application site and degree of deterioration! The construction will be carried out by members of the Crystal Concrete Association nationwide. Nikko Corporation website: http://www.nikko-gp.co.jp/ Crystal Concrete Association website: http://nikko-cca.com/

• Foundation construction
• Other civil engineering works
• Concrete Machinery

"T&C Corrosion Protection - for Salt Damage -" is a revolutionary and highly effective method that prevents the intrusion of deterioration factors such as salt by simply applying two types of impregnation materials to the concrete surface. Just by applying it, water repellency and salt resistance are significantly enhanced! It effectively prevents the intrusion of moisture and salt. The surface hardness also increases, helping to reduce maintenance costs. 【Features】 ■ Salt resistance superior to general silicate and silane products ■ Performance remains unchanged whether applied upward or sideways ■ Installation in tidal zones is possible ■ Water absorption suppression performance is exhibited even underwater ■ Increases surface hardness and reduces maintenance frequency

• Special Construction Method
• Civil Engineering Company
• Other civil engineering services

Concrete structures in cold areas and mountainous regions, which are subjected to freeze-thaw cycles, experience micro-cracking, scaling, and pop-outs due to the repeated freezing expansion and melting of moisture within the concrete, leading to deterioration from the surface. Since the regulation of spike tires, the amount of deicing agents such as sodium chloride has increased. As a result, concrete structures in coastal areas and regions where deicing agents are applied are showing visible scaling damage. Furthermore, the deterioration of concrete structures due to scaling not only detracts from aesthetics but, if significantly advanced, can lead to reduced load-bearing capacity due to decreased concrete cross-section and increased risk of rebar corrosion due to reduced cover thickness and concrete weakening, significantly lowering the durability of the concrete. Scaling countermeasures could only be managed through the control of concrete mix. "T&C Corrosion Prevention" can implement scaling countermeasures for both new and existing structures. Construction will be carried out by members of the T&C Corrosion Prevention Method Association nationwide. T&C Corrosion Prevention Method Association website: http://http://nikko-tca.com/

• Renovation and repair methods
• Special Construction Method

The foundation of our country becoming a global economic power in just half a century lies in the development of infrastructure projects. It is no exaggeration to say that concrete is an indispensable element in infrastructure development. The durability of concrete structures is not "permanent." All constructed structures, whether public or private, are destined to be maintained as negative assets upon completion. However, it is not easy to simply rebuild all aging concrete structures. The Crystal Stone series is a permeable, completely inorganic modifier that protects concrete from deteriorating factors such as moisture, carbon dioxide, and salt, by performing surface treatment regardless of whether it is in the existing or new construction phase, thereby achieving long-term durability. The construction will be carried out by members of the Crystal Concrete Association nationwide. Nikko Corporation website: http://www.nikko-gp.co.jp/ Crystal Concrete Association website: http://nikko-cca.com/

• Other civil engineering works
• Civil Engineering Company
• Other civil engineering services

The material properties of organic and inorganic paints have opposing characteristics. Organic paints are easy to process but are susceptible to changes from ultraviolet light and water. In other words, they can be described as having unstable physical properties that are prone to change. On the other hand, inorganic paints are difficult to process but possess stable physical properties that are resistant to changes from ultraviolet light and water. As global environmental issues have come to the forefront, and people's concerns about the environment, safety, and health have increased, the paint industry is no exception and is focusing on the development of "environmentally friendly paints," solvent-free and long-lasting paints. We believe that "inorganic paints," which contribute to reducing life cycle costs and environmental impact, are one answer to such issues. Construction will be carried out by members of the Crystal Concrete Association nationwide. Nikko Corporation website: http://www.nikko-gp.co.jp/ Crystal Concrete Association website: http://nikko-cca.com/ NETIS No. QS-1200001-A

• Special Construction Method