We will be exhibiting jointly with Ando Corporation at the "22nd Pipe and Equipment Comprehensive Exhibition 2025 OSAKA," which will be held for three days from September 11 (Thursday) to September 13 (Saturday), 2025, at Intex Osaka, Hall 6A. Please be sure to stop by when you visit. 【Exhibition Schedule】 ● Environmentally friendly heat exchanger "Heat Recovery Heat Exchanger" ● Cut model of "Stainless Steel High Efficiency Heat Exchanger" ● Skeleton model of heating and cooling heat exchanger "SK Water Coil" ● Cooling heat exchanger "SK Water Coil Cartridge Type" ● Radiant heating pipe for space heating "SK Aerofin Tube" ◆ Event Dates: September 11 (Thursday) to September 13 (Saturday), 2025 10:00 AM to 5:00 PM (until 3:00 PM on the last day) ◆ Venue: Intex Osaka, Hall 6A Address: 1-5-102 Nanko-Kita, Suminoe-ku, Osaka City, Osaka Prefecture, 559-0034 Access: https://www.intex-osaka.com/jp/access/ ◆ Booth Number: 112 ◆ Admission Method: Pre-registration required (free) *Please check the official website for details.

Kikukawa Industrial Co., Ltd. will exhibit at the Osaka Healthcare Pavilion "Exhibition and Display Zone" during the period from June 10 (Tuesday) to June 16 (Monday), 2025, at the 2025 Osaka-Kansai Expo, showcasing "Future Lifestyle - Smart Room" in collaboration with Osaka City Credit Union. Exhibition Details: "Next-Generation Energy Storage Equipment" Exhibition Content: - A mock-up of a hydrogen storage alloy tank that can safely and compactly store hydrogen, which is expected to be a next-generation energy source. - A video presentation depicting a future society and lifestyle with hydrogen, made possible by a hydrogen storage alloy tank equipped with a high-performance heat exchanger. We invite you to stop by when you visit.

We are pleased to announce that Sakai River Industrial Co., Ltd.'s "Rapid Filling Hydrogen Storage Alloy Tank" has been selected for the "Kansai Manufacturing Selection 2025" by the Kinki Bureau of Economy, Trade and Industry, in support of achieving a carbon-neutral society (GX). **Note: "Kansai Manufacturing Selection"** This initiative aims to promote the creation of new industries and markets for small and medium-sized manufacturing companies in Kansai, supporting the dissemination of information and market development for newly developed products and technologies. All employees will take this selection as motivation to continue daily development and improvement, aiming for high efficiency and resource reduction, and to provide heat exchangers that satisfy and earn the trust of our customers.

On March 6, 2023, Shimizu Corporation, the National Institute of Advanced Industrial Science and Technology, and Sakai River Industries Co., Ltd. jointly filed a patent for a "hydrogen storage container."

Kikukawa Industrial Co., Ltd. will be exhibiting at the "Monozukuri Fair 2023" held at Marine Messe Fukuoka. Venue: Marine Messe Fukuoka Hall A & B Booth Number: AE-10 We will be showcasing the following stainless steel heat exchangers at this exhibition: ■ Fin tube heat exchanger for heating and warm air generation: 'SK Plate Fin Heater' ■ Fin tube heat exchanger for cooling and dehumidification: 'SK Water Coil' ■ Fin tube heat exchanger for refrigeration and cool air generation: 'SK Plate Fin Cooler' We will also display our patented new fin shape, the 'Stainless Steel High Efficiency Heat Exchanger.' We sincerely look forward to your visit.

Thank you very much for your continued support and patronage. We regret to inform you that we will be temporarily closed for employee training during the following period. 【Closure Period】August 31, 2023 (Thursday) to September 2, 2023 (Saturday) We apologize for any inconvenience this may cause and appreciate your understanding. Please note that we will resume normal operations on September 4, 2023 (Monday). Responses to inquiries made via WEB, Mail, or FAX during the closure period will be addressed sequentially after September 4, 2023 (Monday).

Improving heat transfer efficiency with a unique fin shape. Also pursuing compactness and low cost. Available for cold climate specifications. The "stainless steel fin tube heat exchanger" excels in corrosion resistance, heat resistance, and strength, ensuring a long lifespan and easy maintenance. Additionally, through industry-academia collaboration, we have successfully improved the fin adhesion and enhanced performance. There are cases where the introduction of this heat exchanger has resolved issues related to corrosion of copper and steel pipes due to water quality impacts, as well as lifespan problems in corrosive environments. It is also suitable for clean operating environments. 【Specifications】 ■ Functions: Dehumidification, solvent recovery, corrosion prevention from corrosive gases and water quality ■ Heat media: Flash steam, saturated water, pure water, well water, industrial water, etc. ■ Element materials - Tubes: Stainless steel pipes (SUS304, SUS316, SUS316L) - Fins: Stainless steel fins (SUS304, SUS316, SUS316L) Other materials available upon consultation We are pleased to announce that Sakai River Industries Co., Ltd.'s "stainless steel high-efficiency heat exchanger with a new fin shape" has been selected for the Environmental and Energy category of the "Kansai Manufacturing New Selection 2021" by the Kinki Bureau of Economy, Trade and Industry.

High-efficiency heat exchanger featuring a new shape fin. Approximately 15% improvement in performance compared to conventional products! A dedicated video is also available. The performance of finned tube heat exchangers is greatly influenced by the degree of contact between the heat transfer tubes and the radiating fins, the shape of the contact, and the shape of the radiating fins. This time, by reviewing the mold and pressing process, we developed high-efficiency stainless steel radiating fins that maximize the degree of contact between the heat transfer tubes and the radiating fins. Compared to our conventional fins, we have achieved an approximately 15% improvement in performance. There are also cases where the introduction of this product has resolved issues related to corrosion of copper tubes due to water quality and lifespan problems in corrosive environments. [Must-see for those facing these issues] ■ Those who need drying and cooling processes in production lines where cleanliness is required ■ Those who want to perform heat exchange in corrosive environments ■ Those seeking compactness and cost reduction ■ Those who want to recover exhaust gas and waste heat to reduce energy consumption *For more details, please download the PDF document or feel free to contact us.

Kikukawa Industrial Co., Ltd. will be exhibiting at the "Osaka Industrial Exhibition 2022" held at My Dome Osaka. Hall Name: Exhibition Hall 1F, 2F, 3F Booth Number: I-28 (2F) We will be showcasing the following stainless steel heat exchangers at this exhibition: ■ Fin tube type heat exchanger for heating and warm air generation: 'SK Plate Fin Heater' ■ Fin tube heat exchanger for cooling and dehumidification: 'SK Water Coil' ■ Fin tube heat exchanger for refrigeration and cool air generation: 'SK Plate Fin Cooler' We will also display the 'High-efficiency stainless steel heat exchanger with a new fin shape' introduced in 'Kansai Monozukuri Selection 2021' and '300 Small and Medium Enterprises and Small Business Operators Soaring'. We will implement measures to prevent the spread of COVID-19, and we sincerely look forward to your visit.

Kikukawa Industrial Co., Ltd. will jointly exhibit with the Sakai City Industrial Promotion Center at the "7th Nagoya Machine Element Technology Exhibition" held at the Nagoya International Exhibition Center (Port Messe Nagoya). Hall Name: Exhibition Hall 3 Booth Number: 17-58 We will be showcasing the following stainless steel heat exchangers at this exhibition: ■ Fin tube heat exchanger for heating and warm air generation: 'SK Plate Fin Heater' ■ Fin tube heat exchanger for cooling and dehumidification: 'SK Water Coil' ■ Fin tube heat exchanger for refrigeration and cool air generation: 'SK Plate Fin Cooler' We will also display the 'High-efficiency stainless steel heat exchanger with new fin shape' introduced in 'Kansai Monozukuri Shinsen 2021' and '300 Small and Medium Enterprises and Small Business Operators Soaring'. We will implement measures to prevent the spread of COVID-19, and we sincerely look forward to your visit.

We are pleased to announce that we will be exhibiting at the "42nd Refrigeration, Air Conditioning, and Heating Exhibition - Heeback & R Japan 2022." At this exhibition, we will showcase various products, including the "Stainless Steel High-Efficiency Heat Exchanger with New Shape Fins," which was selected for the "Kansai Manufacturing Selection 2021." We will implement thorough measures to prevent the spread of COVID-19 in preparation for the exhibition. We understand that you may be busy, but we sincerely hope you will take this opportunity to visit our booth, and we look forward to welcoming you. 【Exhibition Contents】 　◆ "Stainless Steel High-Efficiency Heat Exchanger with New Shape Fins" selected for the "Kansai Manufacturing Selection 2021" 　◆ Heating Heat Exchanger "SK Plate Fin Heater" 　◆ Heating and Cooling Heat Exchanger "SK Water Coil" 　◆ Cooling Heat Exchanger "SK Plate Fin Cooler" 　◆ Space Heating Radiating Tube "SK Aero Fin Tube" 【Request for Cooperation in COVID-19 Infection Prevention Measures】 ■ Please wear a mask when visiting. ■ If you are experiencing symptoms such as coughing or fever, please refrain from attending.

Our company has been selected for the "300 Flourishing Small and Medium Enterprises and Small Businesses 2021" by the Small and Medium Enterprise Agency (a bureau of the Ministry of Economy, Trade and Industry). ~ What the "300 Flourishing Small and Medium Enterprises and Small Businesses" is ~ This selection by the Small and Medium Enterprise Agency recognizes small and medium enterprises and small businesses that are active in various fields, such as improving productivity through the introduction of IT services and effective utilization of management resources, actively expanding overseas and capturing inbound demand, promoting work style reforms, and fostering human resources through smooth business succession. We are deeply grateful for the recognition of our past efforts and will continue to strive even harder in our business endeavors. This award is made possible by your support, and all of our employees sincerely thank you.

We will be exhibiting at the "13th Kobe Manufacturing Small and Medium Enterprises Exhibition and Business Meeting" to be held on November 2, 2021 (Tuesday) at the large exhibition hall on the second floor of Kobe Sunbowl Hall. We will showcase heat exchangers at this business meeting. Additionally, we plan to exhibit the "Stainless Steel High-Efficiency Heat Exchanger with New Shape Fins," which has been selected for the "Kansai Manufacturing New Selection 2021." At the entrance of the venue, infection control measures such as hand sanitization and temperature checks will be implemented. Our booth will also have hand sanitizer available and will regularly disinfect contact points to ensure thorough infection control. We sincerely look forward to your visit.

Kikugawa Industrial Co., Ltd. will jointly exhibit with the Sakai City Industrial Promotion Center at the "6th Nagoya Machine Element Technology Exhibition" held at the Nagoya International Exhibition Center (Port Messe Nagoya). Hall Name: Exhibition Hall 3 Booth Number: 3-50 We will showcase the following heat exchangers at this exhibition: ■ Fin tube heat exchanger for heating and warm air generation: 'SK Plate Fin Heater' ■ Fin tube heat exchanger for cooling and dehumidifying: 'SK Water Coil' ■ Fin tube heat exchanger for refrigeration and cold air generation: 'SK Plate Fin Cooler' ■ Radiant tube for space heating: 'SK Aero Fin Tube' Additionally, we plan to exhibit the 'High-efficiency stainless steel heat exchanger with a new fin shape,' which was selected for the 'Kansai Monozukuri Selection 2021.' We will implement measures to prevent the spread of COVID-19, and we sincerely look forward to your visit.

We are holding a panel exhibition introducing certified companies of the Sakai brand "Sakai Gishu," which possesses high-level technology, as follows. If you are nearby, please feel free to stop by. Date: February 1 (Monday) to February 26 (Friday), 2021 Location: Sakai Chamber of Commerce and Industry, 1st Floor Lobby Sakai City Industrial Promotion Center, 1st Floor IPC Gallery ~What is Sakai Gishu?~ Sakai Gishu is a Sakai brand certified by the Sakai Chamber of Commerce and Industry, representing companies in Sakai City with excellent technology. It started in 2006 and currently has 92 certified companies. The aim is to be widely recognized worldwide, enhance the overall image of the Sakai region, promote economic development, and foster a sense of community pride among Sakai citizens.

Kikukawa Industrial Co., Ltd. will be exhibiting at the "5th Nagoya Machine Elements Technology Exhibition" held at the Aichi International Exhibition Center (Aichi Sky Expo). This exhibition showcases mechanical components such as motors, bearings, screws, and springs, as well as processing technologies like cutting and pressing, and surface treatment. Every year, many users from design, development, prototyping, manufacturing, production technology, and purchasing departments visit the exhibition to engage in business discussions with the exhibiting companies. We sincerely look forward to your visit.

Sakigawa Industrial Co., Ltd. was certified as a "Health Management Excellent Corporation 2020 (Small and Medium-sized Enterprises Division)" by the Ministry of Economy, Trade and Industry on March 2, 2020. The Health Management Excellent Corporation Certification System is a program that honors corporations, including large companies and small and medium-sized enterprises, that practice particularly excellent health management based on initiatives that address local health issues and the health promotion efforts promoted by the Japan Health Conference. Main initiatives related to health management at Sakigawa Industrial Co., Ltd. include: - Implementation of work-life balance through reduction of overtime work and promotion of paid leave acquisition - Hosting social gatherings and events aimed at promoting employee communication - Achieving a 100% health check-up participation rate and encouraging check-ups - Creating a workplace where each employee can continue to work vibrantly - Improving dietary habits - Increasing opportunities for exercise - Preventing infectious diseases among employees - Implementing measures against passive smoking Moving forward, we will continue to promote "Health Management" to enhance the mental and physical health of each employee.

On February 21, 2020 (Friday), the Japan Refrigeration and Air Conditioning Industry Association officially decided to cancel the "HVAC&R JAPAN 2020 41st Refrigeration, Air Conditioning, and Heating Exhibition," which was scheduled to be held at Makuhari Messe, in light of the expanding situation of COVID-19 infections both domestically and internationally. We sincerely apologize for the significant inconvenience caused to those who were considering attending, as well as for the late notice. We kindly ask for your understanding. We will contact you when we hold a similar exhibition in the future, and we appreciate your continued support. Event Name: HVAC&R JAPAN 2020 41st Refrigeration, Air Conditioning, and Heating Exhibition Event Dates: March 3 (Tuesday) to March 6 (Friday), 2020 Venue: Makuhari Messe, International Exhibition Hall 9-11 (Booth Number S-001) Organizer: Japan Refrigeration and Air Conditioning Industry Association Official Website: https://www.jraia.or.jp/hvacr/

We will be exhibiting at the "HVAC&R JAPAN 2020 41st Refrigeration, Air Conditioning, and Heating Exhibition" held at Makuhari Messe for four days from March 3 (Tuesday) to March 6 (Friday), 2020. Please stop by our booth when you visit. 【Exhibition Details】 ■ Name: HVAC&R JAPAN 2020 41st Refrigeration, Air Conditioning, and Heating Exhibition ■ Dates: March 3 (Tuesday) to March 6 (Friday), 2020 10:00 AM to 5:00 PM (last day until 4:00 PM) ■ Venue: Makuhari Messe, International Exhibition Hall 9-11 ■ Booth Number: S-001 【Exhibition Content】 We will showcase the following heat exchangers, including stainless steel and aluminum models: ◆ Heating heat exchanger "SK Plate Fin Heater" ◆ Heating and cooling heat exchanger "SK Water Coil" ◆ Cooling heat exchanger "SK Plate Fin Cooler" ◆ Radiant tube for space heating "SK Aero Fin Tube"

We will be exhibiting at the "HVAC&R JAPAN 2020 41st Refrigeration, Air Conditioning, and Heating Exhibition" held at Makuhari Messe for four days from March 3 (Tuesday) to March 6 (Friday), 2020. Please stop by our booth when you visit. 【Exhibition Details】 ■ Name: HVAC&R JAPAN 2020 41st Refrigeration, Air Conditioning, and Heating Exhibition ■ Dates: March 3 (Tuesday) to March 6 (Friday), 2020 10:00 AM to 5:00 PM (last day until 4:00 PM) ■ Venue: Makuhari Messe, International Exhibition Hall 9-11 ■ Booth Number: S-001 【Exhibited Products】 We will showcase the following heat exchangers, including stainless steel and aluminum models: ◆ Heating heat exchanger "SK Plate Fin Heater" ◆ Heating and cooling heat exchanger "SK Water Coil" ◆ Cooling heat exchanger "SK Plate Fin Cooler" ◆ Radiant tube for space heating "SK Aero Fin Tube"

On November 18, 2019 (Monday), we received the Special Award at the "1st Year of Reiwa 5th Shimano Monozukuri Award"! The "Shimano Monozukuri Award" is presented by the Shimano Foundation, which honors small and medium-sized enterprises engaged in manufacturing that have their headquarters or main business locations in Sakai City and have achieved outstanding results in manufacturing technology. This award was received for the development of a high-efficiency new type of fin, utilizing the Sakai City Monozukuri Challenge Subsidy and with the cooperation of industry-academia-government collaboration (Sakai City Chamber of Commerce, Sakai City Industrial Promotion Center, Osaka Prefecture University, Osaka Institute of Technology, and Sakai City companies). Sakaigawa Industrial Co., Ltd. will continue to develop and improve daily, aiming for high efficiency and resource reduction, and will provide "heat exchangers that work hard in unseen places" that our customers will appreciate.

On March 14, 2019 (Thursday), the certification ceremony for the Sakai brand "Sakai Gishu" was held, and Sakai River Industrial Co., Ltd. was certified as one of a total of 94 companies, including 8 new certified companies and 86 renewing certified companies. "Sakai Gishu" refers to a system aimed at enhancing the recognition, credibility, and competitiveness of excellent companies born from the traditions and history of Sakai City, with the goal of revitalizing the entire Sakai region. Companies within Sakai City that possess "tradition," "skill," and "advanced cutting-edge technology" are evaluated based on criteria such as competitiveness, management, market development, and consideration/contribution to society, the environment, and the community, and are certified through a review committee of experts. Sakai River Industrial Co., Ltd. will continue to strive for better "monozukuri" (manufacturing) that brings joy to our customers as a Sakai company.

Starting from February 25, we are distributing an introduction video for the New Value Creation NAVI on YouTube. You can see the efforts of "Sakaigawa Industries in Heat Exchangers."

We would like to express our heartfelt sympathy to all those affected by the recent earthquake and typhoon. We sincerely pray that there will be no further expansion of the damage. Due to the impact of Typhoon No. 21, our phone and fax services have been out of order since September 4, 2018. We would like to inform you that services will be restored and will be back to normal starting October 1 (Monday). We apologize for the inconvenience caused by the prolonged communication disruption. We sincerely pray for the safety of those in the disaster-stricken areas and for a swift recovery.

We have created an Instagram account for Sakaigawa Industry! We will be sharing product information and more, so please search for "sakaigawa_industry" and follow us. Thank you!

Thank you very much for visiting our booth at the "3rd Nagoya Machine Elements Technology Exhibition," held at Port Messe Nagoya from April 11 to April 13, 2018, despite your busy schedule. We sincerely appreciate your support, which allowed us to successfully hold the exhibition. During the exhibition, we were very pleased to see many people showing interest in "Sakaigawa Industry's heat exchangers." We would like to express our heartfelt gratitude once again. We also deeply apologize for not being able to provide sufficient explanations during busy times, despite your visit to our booth. Going forward, all of our employees will work diligently to provide products and services that satisfy our customers, and we kindly ask for your continued patronage. We understand that there were some shortcomings during your visit, and we appreciate your understanding.

Thank you very much for visiting our booth at the "HVAC&R JAPAN 2018 40th Refrigeration, Air Conditioning, and Heating Exhibition," held at Makuhari Messe from February 27 to March 2, 2018, despite your busy schedule. Thanks to all of you, we were able to hold the exhibition successfully, and we sincerely appreciate it. If you have any questions or concerns regarding the exhibited items or our products, or if you need any materials, please feel free to contact us using the "Inquiry" form below. We will continue to strive to provide products and services that satisfy our customers, and we ask for your continued support in the future. We understand that there may have been some shortcomings during your visit, and we kindly ask for your understanding.

In October 2017, Sakai River Industrial Co., Ltd. was featured as "Sakai's Amazing Talent" in "Sakai IPC PRESS VLO.45" published by the Sakai City Industrial Promotion Center.

Starting from March 13, we are streaming introduction videos of the exhibiting companies at the New Value Creation Exhibition 2016 on YouTube. You can see the efforts of "Sakaigawa Industries, a heat exchanger manufacturer."

On February 7, 2017 (Tuesday), the award ceremony for the "Osaka Excellent Manufacturing Company Award 2016" was held, and our company received the Excellent Company Award. Encouraged by this award, we are committed to providing heat exchangers that live up to the name of "Osaka Excellent Manufacturing Companies," ensuring customer satisfaction and trust, and striving to revitalize manufacturing in Osaka.