We will be exhibiting at the Functional Film Expo 2022 held on July 27-28, 2022.

This is a surface treatment technology that dramatically improves the adhesion of fluororesin films and polyimide films, which have been considered difficult to bond until now.

At Kawamura Industries, we apply plasma treatment to films, metal foils, non-woven fabrics, and more, performing surface modification such as hydrophilization and hydrophobicity. This process significantly improves the adhesion of various films and allows for the removal and purification of organic substances from the substrate surface. It can effectively remove residues such as rolling oils that are difficult to completely eliminate with wet cleaning. Additionally, it is possible to bond various materials together without the use of adhesives. **Features of Kawamura Industries' 'Vacuum Plasma Treatment':** - Dramatically improves adhesion - Effectively removes rolling oils and organic substances, purifying the surface - Allows for adhesive-free bonding of various materials - Selects suitable gas types and plasma treatment conditions for each project - Treatment effects last for an extended period - Continuous processing is possible with roll-to-roll technology *For more details, please refer to the PDF document or feel free to contact us.*

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Presentation of 4 technical introduction materials: We respond from prototyping to mass production! We also support material procurement. We can accommodate electronic materials that require high functionality, such as those for 5G products.

At Kawamura Industries, we create and provide electronic materials with various functions by integrating slit processing, plasma surface treatment, sputtering processing, thermal lamination, and more. We can handle everything from prototyping to mass production, including material procurement. We also welcome inquiries for small lot requests. 【Our Technologies】 ■ Slit Processing With about 50 years of extensive experience, we can accommodate slit widths from 2mm to 2,000mm. We can process not only in clean rooms but also in yellow rooms. ■ Plasma Surface Treatment Effective for improving the adhesion of low-adhesion films like fluorine films. Our roll-to-roll equipment allows for rapid mass production startup. ■ Thermal Lamination We have a vacuum thermal press capable of handling high temperatures up to 400°C within a clean room. Our laminating machines can also operate in a clean environment from the preparation stage. ■ Sputtering Deposition We possess roll-to-roll equipment. In collaboration with partner companies, we can also perform electrolytic copper plating on sputtered films using roll-to-roll methods. *You can view technical documents and introductory materials regarding the above processing technologies from the "PDF Download" section. Please feel free to contact us with any inquiries.

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It is a heat-resistant laminated board that is laminated and integrated without adhesive using polyimide film.

Kawamura Industries' "Polyimide Laminate (PI-Plate)" is a laminate made by laminating and thermally bonding polyimide film that has been activated on its surface through plasma treatment. 【Features of Kawamura Industries' "Polyimide Laminate"】 　■ Excellent heat resistance due to being adhesive-free 　→ Continuous: 200°C / Short-term: 400°C 　■ Exhibits excellent mechanical properties derived from polyimide film 　■ Laminate can be produced in sizes up to 480mm × 1,100mm 　■ Maximum thickness of 10mm (proven) 　※ Please feel free to consult us regarding thicknesses over 10mm. ※ For examples of properties, please refer to the PDF document or feel free to contact us.

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The "vacuum hot press," which can also perform surface treatment in the previous process, and the "coating" technology for metal foils are suitable for the processing of electronic materials such as substrates for 5G and base materials for planar heating elements!

Kawamura Industries develops and manufactures materials for electronic applications and provides associated processing technologies. We will introduce technologies that have been adopted for substrates for 5G and materials for planar heating elements. 【Our Technology: Electronic Materials - Strengths of Vacuum Hot Press Coating Technology】 ■ Vacuum Hot Press In prototype and mass production using vacuum hot pressing, we can press without adhesives, allowing us to better utilize the inherent properties of the materials. (Note: We can also accommodate laminated products with adhesives.) - We have a large number of pressing machines, capable of handling various sizes and temperatures. - There are pressing machines installed in a cleanroom environment. ■ Resin Coating on Metal Foil Although we operate in a contract processing format, we can combine "metal foil + high-temperature treatment." - Our coating drying oven can handle temperatures up to 260°C, allowing for the drying of high-boiling point solvents. - We can also accommodate polyimide coating with a high-temperature curing oven that can handle up to 400°C. Including material procurement, we provide consistent support from small lots and prototypes to mass production, so please feel free to contact us. * We are currently publishing an introduction document summarizing what Kawamura Industries can do! You can view it immediately from [PDF Download].

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By dissolving the powder in a solvent and drying it, you can obtain a transparent and high-heat-resistant polyimide film!

Kawamura Industries' "KPI-MX300F" is a polyimide powder material that can dissolve in various solvents. The film obtained by dissolving in a solvent and then heating and drying has minimal coloring and high transparency, which is a major feature. **Features of Kawamura Industries' "KPI-MX300F"** - Can dissolve in various solvents - Produces transparent, high-heat-resistant polyimide films - The resulting film has minimal coloring and high transparency *For property values, please refer to the PDF document or feel free to contact us.*

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Thank you for your continued support. On February 18, 2026, we will release the comprehensive weather platform ZEROSAI X-AI. Our strength lies in the ability to integrate AI for wind speed forecasting, weather observation, environmental data, and hazard notifications, in line with traditional pinpoint weather forecasting. On the same day, we will also release a cloud-managed dust meter as a new option for the comprehensive marine platform Compass PLUS. For more details, please visit our website.

We have prepared a product catalog for the high-performance sound-absorbing material brand Ecophon. This catalog clearly summarizes a diverse lineup of products designed to enhance the acoustic quality of spaces, featuring photographs, case studies, and sound absorption performance graphs. "When sound changes, the space changes." Ecophon's sound-absorbing materials are designed to improve comfort in various settings, including offices, educational institutions, medical facilities, and commercial spaces. In this catalog, you can find detailed information on the features, specifications, and design variations of each product. You can contact us through the inquiry form on the official Ecophon website to download it for free. We hope it will be useful for your space creation and sound environment improvement considerations.

When buying new cosmetics, while the bottle design is important, what catches the eye first is definitely the "box." When faced with a selection of many cosmetics and unsure of which to choose, it often comes down to making a "package purchase," similar to impulse buying based on the cover. This time, we asked our long-time partner, the cosmetics manufacturer Kurecos Co., Ltd., why they continue to create packages with Kaypack. 【I can hardly remember when we started working with Kaypack】 We began our dealings with Mr. Kita (Kaypack) over 20 years ago, so long ago that I can hardly remember the beginning. In the early days, we relied on another packaging company. However, since starting our relationship with Mr. Kita (Kaypack), we have entrusted the majority of our packaging production to them. There is a mutual understanding developed over our long relationship, and the sense of security that comes from knowing they understand everything makes it easy to request work from them. There is a level of stability that allows us to build trust.

The "Hybrid Joint TCF Type" is a bridge expansion device designed for the Tohoku region that responds to "compacted snow," which occurs due to vehicle traffic after snowfall. It meets the 10kN snow load standard set by the Tohoku Regional Development Bureau. Additionally, it adopts a structure known as the "face plate type," which ensures that the water-stopping material does not become exposed on the surface, and it comes standard with "secondary water-stopping material." By employing a double structure, it reduces the risk of leakage and achieves higher water-stopping performance. Furthermore, to prevent snowplow blades from getting caught on the expansion device, it also comes standard with a "snow removal guide plate." This not only protects the product itself but also considers safety during snow removal operations.

Castem Co., Ltd. and Castem Global Group's Castem Vietnam held a completion ceremony for the newly established Vietnam factory in Quang Ninh Province, Northern Vietnam, in January 2026. This is the first time our group has expanded into Vietnam, and this factory will be our seventh overseas production base. After the planned second phase of construction, it is expected to become the largest production base in the group in the future. The factory will manufacture lost-wax precision casting parts used in semiconductors, precision machinery, and construction machinery. We chose Vietnam, where economic growth is anticipated, as a new production base for our main business of lost-wax precision casting. Currently, we are advancing prototype production and plan to start mass production by the end of May 2026. Once the second phase of construction is completed by the end of 2028, we will ultimately be able to produce one million units per month (with a product shipment weight of approximately 120 tons per month). On the day of the ceremony, about 100 participants, including business operators and local stakeholders, attended and toured the various processes such as mold making, casting, and processing. Although we are starting with a compact system in terms of equipment and personnel, we will continue to take on challenges and advance our business to a new dimension.