Mandatory compliance with energy-saving standards: Underfloor materials that combine sound insulation and thermal insulation.

[Sample Available!] Direct floor soundproofing substrate with the performance of "L-45"

**Features** - 43mm low floor height ensures sufficient ceiling height - Low floor height allows for good fitting under window frames - Reliable floor sound insulation performance (L-45 certified by a third-party organization) - Easy installation with no need for a base layer, just lay it down - High shock absorption comparable to tatami (approximately G50) Please consider for hotels, condominiums, and apartments. For more details, please check the link to the Iida Sangyo website below. You can request and confirm the following items on the website: - Request for samples - Free download of product CAD data - Viewing of actual installation videos (installation time: approximately 3 hours for 50m²) Adoption examples * Photos of examples can be viewed on the Iida Sangyo website. - A yoga studio wants to open in a commercial building, but sound insulation is necessary due to a tutoring school below. → Ensured sound insulation while maintaining a ceiling height with a low floor of 43mm. No complaints from below. - A request was made to renovate from tatami/straight-laid cushion flooring to hardwood flooring. → Achieved the same floor height of 55mm as tatami, accommodating barrier-free access by applying it to the original cushion flooring area.

• Soundproofing panels

[Sample Available] A one-piece unit that only needs to be laid out and does not require disposal! Equivalent sound insulation to LL-45 and insulation performance comparable to high-performance glass wool insulation 48K!

Product Name: Chardan OY430 【Features】 ✔ No need for disposal; low height of 43mm! ✔ Integrated soundproofing and insulation unit ✔ Easy installation by simply laying it down; installation time is approximately 3 hours for 50m² (according to our own research) ✔ High impact absorption performance equivalent to tatami mats This is a floor soundproofing material that can be laid under flooring with a thickness of 43mm. Being a bottom layer, it fits well under window frames! Since it fills the underfloor space with a special sound-absorbing material, it provides both soundproofing and insulation effects simultaneously. OY430 Thermal Conductivity: 0.040 [W/(m·K)] OY430HS Thermal Conductivity: 0.033 [W/(m·K)] * OY430HS is a high insulation version of OY430. The composition and basic performance (thickness / soundproofing / workability / safety) are equivalent to OY430. Using our uniquely designed "OY Joint," we achieved innovative construction that reduces labor and noise during installation. It features high impact absorption similar to tatami mats, ensuring high safety during falls. It is also recommended for use in facilities for the elderly and kindergartens.

• Renovation and repair methods

[Sample Presentation] Easy installation with soundproofing performance equivalent to LL-45 and insulation performance comparable to high-performance glass wool insulation 48K! 40mm thick low-floor base material.

Product Name: Chardan SPF400 【Features】 ✔ Low height of 40mm! ✔ Integrated soundproofing and insulation unit ✔ Reduced construction time to less than 1/3 compared to dry double flooring! (In-house research) ✔ Achieved LL-45 with SPC flooring! A multi-type that does not limit the choice of top material This is a floor soundproofing material laid under flooring with a thickness of 40mm. It has been certified for performance with SPC flooring, which is said to be thin and hard, making it difficult to ensure soundproofing performance. With Chardan SPF400, SPC flooring can be used not only in commercial facilities but also in apartment buildings and welfare facilities where soundproofing and insulation functionality is required. Since it is a form that fills the underfloor space with special sound-absorbing material, it provides both soundproofing performance and insulation effect simultaneously. SPF400 Thermal conductivity: 0.040 [W/(m·K)] SPF400HS Thermal conductivity: 0.033 [W/(m·K)] * SPF400HS is a high insulation version of SPF400. The composition and basic performance (thickness/soundproofing/constructability/safety) are equivalent to SPF400. By using dedicated edge treatment materials and fastening components, we achieve innovative construction that reduces construction time and noise.

• Tile/Indoor

【Sample Giveaway!】Concentrating unique technology into units, providing overwhelming construction efficiency and a comfortable living space.

Shardan supports comfortable living in collective housing such as condominiums and apartments from the floor up, thanks to its excellent soundproofing and thermal insulation properties. It accommodates a wide range of flooring materials, including solid wood flooring and SPC flooring, and mitigates impact noise transmitted from upper floors to lower floors. **Features of Shardan** ☆ Integrated soundproofing and insulation unit With a low floor thickness of 40mm, it can secure a space that is "more than 100mm higher than the standard ceiling height." Soundproofing: Industry-first! Achieves floor sound insulation performance of "LL-45" with a thickness of only 40mm, obtaining ΔLL(II)-3S. Thermal insulation: Uses sound-absorbing insulation material that demonstrates thermal conductivity equivalent to "high-performance glass wool insulation 48K." Ease of installation: Compared to dry double flooring, it "reduces installation time to less than 1/3," with simple laying using specially designed fastening components. Safety: Provides "high shock absorption" equivalent to tatami mats, improving safety during falls. **Shardan Lineup** ◯ SPF400 / SPF400HS A multi-type that does not limit finishing materials. *SPF400HS is a high thermal insulation version of SPF400.* ◯ OY430 / OY430HS A low-construction type that does not require a subfloor. *OY430HS is a high thermal insulation version of OY430.*

• Double Floor System

[Sample Available] Just lay it out; a one-piece unit that doesn't require any adhesive! Equivalent to LL-45 sound insulation and the same thermal insulation as high-performance glass wool insulation 48K!

Product Name: Chardan OY430 [Features] ✔ No need for underlayment; low height of 43mm! ✔ Integrated soundproofing and insulation unit ✔ Easy installation by simply laying it down; installation time approximately 3 hours for 50m² (according to our research) ✔ High impact absorption performance equivalent to tatami mats This is a floor soundproofing material that can be laid under flooring with a thickness of 43mm. Being a bottom layer, it fits well under window frames! Due to its structure filled with special sound-absorbing material, it provides both soundproofing performance and insulation effect simultaneously. OY430 Thermal conductivity: 0.040 [W/(m·K)] OY430HS Thermal conductivity: 0.033 [W/(m·K)] * OY430HS is a high insulation version of OY430. Its composition and basic performance (thickness/soundproofing/constructability/safety) are equivalent to OY430. Using our uniquely designed "OY Joint," we achieved innovative construction that reduces labor and noise during installation. It features high impact absorption similar to tatami mats, ensuring safety during falls. It is also recommended for use in facilities for the elderly and kindergartens.

• Renovation and repair methods

Would you like to use a flooring substrate that can provide both insulation and soundproofing to comply with the revised Energy Conservation Act?

According to the revised Energy Conservation Act for Buildings, all new buildings must comply with the "Energy Conservation Standards" starting in 2025. Floor insulation is one of the key points for the longevity of buildings. Are you looking for a flooring substrate that combines soundproofing and insulation? Product Name: Chardan SPF400 【Features】 ✔ Low height of 40mm! ✔ Integrated soundproofing and insulation unit ✔ Reduced construction time to less than 1/3 compared to dry double flooring! (In-house research) ✔ Achieved LL-45 with SPC flooring! A multi-type that does not limit the choice of top materials It has achieved performance with SPC flooring, which is said to be thin and hard, making it difficult to ensure soundproofing performance. Since it is a form filled with special sound-absorbing material in the underfloor space, it provides both floor soundproofing performance and insulation effect simultaneously. By using dedicated edge treatment materials and fastening components, we have realized innovative construction that reduces construction time and soundproofing work.

• Other flooring materials

The non-contact beam touch sensor "HA-T401/HA-T520" has a compact detection range, making it an ideal automatic door sensor for installation on automatic doors facing narrow corridors or busy streets. Depending on the application and installation location, you can choose between "non-vision mounting type" and "non-vision built-in type." 【Features】 ● With the beam touch sensor, you can open and close the automatic door simply by bringing your hand close without touching it, ensuring hygiene. ● Depending on the installation environment, such as single sliding or bi-parting doors, the detection range can be set in four configurations: left, center, right, and a total of 12 spots. ● Two types of activation row settings are available to reduce unnecessary opening and closing of the automatic door due to cross traffic, contributing to energy-saving effects. ● The touch switch and infrared sensor are integrated, allowing for a switch between beam touch and infrared sensor with a single model. 【Recommended for such locations!】 ☑ Entrance facing a busy corridor ☑ Counter or sign near the door ☑ Buildings facing narrow corridors ☑ Buildings that prioritize aesthetics ☑ Hospitals and facilities that consider hygiene ☑ Large facilities with many doors ◎ For more details, please download the materials or contact us.

Products for wall and ceiling use with gypsum boards, as well as items for RC construction renovations, have been added to the listings released last year. New construction examples have also been added, which can be used to propose ideas to customers considering renovations. Please utilize the subsidies from the Mirai Eco Housing 2026 project for proposals on insulation renovations combined with water area and window improvements.

We would like to express our sincere gratitude for your continued support. As you may be aware from recent news reports, the situation in the Middle East has deteriorated rapidly, leading to an increase in the prices of raw materials originating from that region. Consequently, there is a possibility that the prices of our products may also rise in the future. Please be advised that due to fluctuations in the market conditions of raw materials, we may change prices without prior notice, and we appreciate your understanding in advance. Additionally, regarding product delivery times, we are currently operating as usual. Should there be any changes in the future due to the situation, we will inform you accordingly. We apologize for any inconvenience this may cause and thank you for your understanding.

The initiatives of our parent company, Inbacks Co., Ltd., have been featured in the web media ZEROICHI.

The bridge expansion device manufacturer, Crittec Co., Ltd., is seeking a few ambassadors for the "100-Year Bridge Project," who are interested in the civil engineering and bridge fields and can share their appeal and social issues through social media. This initiative aims to raise awareness about the current state of aging social infrastructure and the importance of maintenance and management. We welcome individuals with interest or knowledge in civil engineering and bridges as ambassadors to collaboratively plan, create, and disseminate content, thereby promoting understanding and revitalization of social infrastructure as a whole. Would you like to share the interesting aspects and importance of social infrastructure through your perspective and creative activities? We welcome those who are engaged in creative activities or information dissemination related to civil engineering and social infrastructure, as well as those who wish to take on new challenges. The number of followers does not matter. Your "likes" and "messages" may connect to the future of social infrastructure. Please feel free to apply.