Notice of participation in the 18th Kansai Exterior Fair 2025 from June 5 (Thursday) to June 6 (Friday), 2025.

【Solving the Weed Problem】Resistant to rain and wind, usable on the surface. Exposure construction is also possible, and the weed suppression effect lasts for a long time!

Our company offers the weed control sheet "Ultra Weed Control Kun 300G." With UV degradation inhibitors and a unique manufacturing method, it enhances weather resistance and strength against UV rays, solving weed problems. 【Features】 ■ Weeding suppression ■ Excellent permeability ■ Can be cut with scissors ■ Easy installation ＼ For more details, please check the related links or feel free to contact us. ／

• Civil Engineering Sheet

"I want to choose a paving material that is safe because it is a place I pass by every day." A natural stone permeable paving material that considers people and the environment by using urethane resin that does not contain VOCs.

The "Laston Series" is a natural stone permeable paving material that uses urethane resin without VOCs, taking into consideration both people and the environment. 【Features】 ■ Excellent permeability, reducing concerns about puddles ■ Uses urethane resin that does not contain VOCs ■ The cured resin complies with food sanitation laws, making it safe for pets ■ Uses non-yellowing resin, preventing discoloration from UV rays ＼ For more details, please check by "downloading the catalog" ／

• stone

Effective in preventing thermal condensation in buildings by using foam particles for labor-saving and shortening construction periods in plastering work!

The new lightweight aggregate "H·S Sand" for undercoat mortar uses fine particles of expanded plastic as the main aggregate, which is blended with adhesives, thickeners, and water-retaining agents in the factory. It is a new lightweight aggregate used for plastering undercoat mortar. 【Features】 ■ Excellent adhesion in addition to preventing cracks and peeling ■ Energy-saving plastering material ■ Usable for a wide range of applications from thin to thick coatings ■ Lightweight and easy to apply, significantly improving work efficiency ＼ For more details, please check by downloading the catalog ／

• Mortar and plaster materials
• Plastering and painting work

Minimize cracks, maintain aesthetics, and reduce risks during disasters! A fiberglass net is embedded in the surface to suppress wall collapse during earthquakes.

The fiberglass net "HS Super Net" is made from highly durable glass fibers that have been treated for alkali and acid resistance. It is effective in suppressing cracks in mortar when used for full or partial reinforcement of wet exterior walls. 【Features】 ■ Exceptional durability due to alkali-resistant treatment ■ Reduced risk of wall detachment during earthquakes ■ Strong tensile strength from high-quality intertwined glass fibers ■ Easily integrates with mortar, significantly reducing initial cracking ■ Stable quality maintenance through world-standard quality control (ISO 9001 certified) ＼ For more details, please check "Download Catalog" ／

• Fiber wall
• Plastering base material
• Plastering and painting work

Improved work efficiency! Lightweight aggregate for cement mixtures with excellent adhesion.

"H・S Mild Sand II" is a lightweight aggregate for cement mixing that uses calcium carbonate foam as its main raw material. It effectively absorbs and disperses the drying shrinkage of concrete structures and topcoat mortars, preventing delamination and cracking of finishing materials. It can be applied in thin layers or built up with multiple coats, allowing for easy adjustment of thickness. With moderate elasticity, it provides uniform pressure from troweling and excellent adhesion. 【Features】 ○ High work efficiency ○ Fatigue reduction effect ○ Cost reduction For more details, please contact us or download the catalog.

• Mortar and plaster materials
• Plastering and painting work

Factory pre-mixed product! Mortar for undercoating with stable quality.

"Styrene-based New Sand Mortar" is a pre-mixed lightweight mortar made from styrene sand and cement. Since on-site mixing is not required, it can speed up plastering work. There is no worry about styrene scattering in the wind, and a stable quality base coat mortar can be obtained. 【Coating Thickness and Application Area】 ○ 4mm thickness: 8.1 m² ○ 6mm thickness: 5.5 m² For more details, please contact us or download the catalog.

• Premixed mortar
• Plastering and painting work

Ideal for block, foundation, and RC! Substrate leveling sand mortar.

"New Sand Block" is a pre-mixed sand mortar that has been improved for use as a base layer for blocks, foundations, and RC (reinforced concrete) surfaces. Its moderate viscosity, trowel spreadability, and ease of trowel sliding enhance work efficiency and reduce fatigue. 【Standard Mix】 ○ New Sand Block: 1 bag ○ HS Morubon: 1 kg ○ Water: Approximately 11 liters For more details, please contact us or download the catalog.

• Plastering base material
• Premixed mortar
• Plastering and painting work

No need for water addition! Liquid type water-reducing agent compatible with 50kg of cement.

The water-reducing agent "Rasemake" for rough coat mortar eliminates the need for pre-coating water application when mixed with rough coat mortar, providing water reduction effects. Being a liquid type, it can be easily mixed by simply diluting it with water. 【Features】 ○ No need for water application ○ Compatible with 50kg of cement ○ Can be easily mixed by simply diluting with water For more details, please contact us or download the catalog.

• Plastering and painting work

We will be exhibiting at "CEATEC 2026," which will be held at Makuhari Messe from October 13 to 16. We provide information technology and process informatics (PI) that optimize "how to create" using physical simulations, AI, and machine learning in process development. We look forward to your visit to our booth. 【Seminar Information】 "Process Informatics for Exploring Optimal Manufacturing Conditions" Date and Time: October 16, 2026 (Friday) 12:45 - 13:00 Venue: Makuhari Messe Exhibition Hall 4 P Stage Speaker: CEO Takaishi Please check the link below for details on our exhibition.

In recent years, weather risks that affect construction sites, such as localized heavy rain, strong winds, and extreme heat, have been increasing. In response to this situation, more companies are implementing weather information services at the company or branch level to manage weather risks across multiple sites collectively. On the other hand, is there a challenge where "the company checks weather information, but it is not used much on-site"? To implement weather measures across the entire company, it is important not only for managers to easily grasp multiple sites but also for the personnel working on-site to be able to easily check the information necessary for their specific site. We are releasing a new feature called "Field View." For more details, please visit our website.

In recent years, weather risks such as localized heavy rain, strong winds, and extreme heat that affect construction sites have been increasing. In response to this situation, more companies are adopting weather information services at the company or branch level to manage weather risks across multiple sites collectively. On the other hand, is there a challenge where "the company checks weather information, but it is not used much on-site"? To implement weather measures across the entire company, it is important not only for managers to easily grasp multiple sites but also for the personnel working on-site to be able to easily check the information necessary for their specific site. We are releasing a new feature called "Field View." For more details, please visit our website.

In recent years, weather risks such as localized heavy rain, strong winds, and extreme heat that affect construction sites have been increasing. In response to this situation, more companies are introducing weather information services at the company or branch level to collectively manage weather risks across multiple sites. On the other hand, is there a challenge where "the company checks weather information, but it is not used much on-site"? To implement weather measures across the entire company, it is important not only for managers to easily grasp multiple sites but also for the personnel actually working on-site to be able to easily check the information necessary for their specific site. We are releasing a new feature called "Field View." For more details, please visit our website.

～A high-efficiency customer attraction strategy where homebuyers come in saying "I saw it on ○○!" and a product/design strategy that is specifically requested with "I want to build with Harbor!"～ In an era where simply building a "good house" is not enough to survive, the environment surrounding local construction companies is becoming increasingly harsh due to rising material costs, labor shortages, and intensified competition with major companies. In this context, Harbor House, which has been established for 19 years in the competitive region of Niigata Prefecture, has achieved an annual completion of 450 houses and is now ranked No. 1 in the number of construction starts in Niigata Prefecture. Its strength lies not in a single charismatic leader, but in a thoroughly refined "system." Customers who say, "I came after seeing your website" are reliably guided to contracts through a high-efficiency sales flow based on "batting average management." In this online seminar, we will generously share the know-how of customer attraction, product, and management that Harbor House practices with business owners. We will present the shortest route to becoming a "construction company that continues to be chosen" in your business area. ◇Detailed information and application https://x.gd/pUe2b ◇Phone inquiries TEL: 025-383-8881