KELLER will exhibit at the Hydrogen and Fuel Cell Expo! March 17-19, 2026 at Tokyo Big Sight, West Hall 2, W15-36.

The pressure sensor for hydrogen applications has finally arrived!

The 23SY-H2(Ei) series is characterized by a low embrittlement rate due to an increased nickel content in the stainless steel used. The gold-plated diaphragm minimizes hydrogen diffusion. Additionally, the pressure sensor is compensated across the entire temperature range, providing excellent long-term stability. The 23SY-Ei-H2 series is a reliable solution equipped with long life, high precision, and safety, meeting various hydrogen requirements. 【Features】 〇 Adoption of stainless steel with increased nickel content as a measure against hydrogen embrittlement 〇 Use of gold-plated diaphragm widely used in hydrogen applications to minimize hydrogen diffusion 〇 Achieves ±0.7% accuracy within -10 to 80°C 〇 Excellent long-term stability 〇 Welded structure without internal seals 〇 Available in intrinsically safe explosion-proof type (23SY-Ei-H2)

• Pressure

High-precision pressure sensors for hydrogen applications have finally arrived!

The 23SX-H2 series is characterized by a low embrittlement rate due to an increased nickel content in the stainless steel used. The gold-plated diaphragm minimizes the diffusion of H2. Additionally, the pressure sensor is compensated across the entire temperature range and has excellent long-term stability. The 23SX-H2 series is a reliable solution that offers long life, high precision, and safety, meeting all hydrogen requirements. 【Features】 〇 Adoption of stainless steel with increased nickel content as a countermeasure against hydrogen embrittlement 〇 Use of gold-plated diaphragm widely used in hydrogen applications to minimize hydrogen diffusion 〇 Achieves ±0.25% accuracy within -10 to 80℃ 〇 Standard equipped with two outputs: digital RS485 and analog output 〇 Analog output can be range-changed via digital RS485 〇 Excellent long-term stability 〇 Welded structure without internal seals 〇 Available in intrinsically safe explosion-proof type (33X-Ei-H2)

• Pressure

The digital pressure gauge for hydrogen applications has finally arrived! With logging function.

The high-precision digital pressure gauge LEO Record H2 is a digital pressure gauge that can record pressure and temperature over long periods. By increasing the nickel content in stainless steel, it ensures a low embrittlement rate and a long service life. Additionally, the gold-plated diaphragm minimizes the diffusion of H2. With the RS485 interface, the pressure gauge can be easily connected to a PC for settings and data retrieval. Its high accuracy and safety allow the LEO Record H2 to meet the requirements for measuring instruments in the hydrogen field. 【Features】 • Use of stainless steel with increased nickel content to counter hydrogen embrittlement • Gold-plated diaphragm to minimize hydrogen diffusion • Records pressure and temperature • High data security with non-volatile memory • Ultra-low power consumption / long battery life • Various pressure units selectable (bar, mbar, hPa, kPa, MPa, PSI, kg/cm2, etc.) • Zero point calibration via button • Recording function can be manually started and stopped • Various recording function settings available • Available in intrinsically safe explosion-proof type (LEO-Record-Ei-H2)

• Pressure

We would like to extend our heartfelt congratulations on the continued prosperity of your esteemed company. Our company will be exhibiting at the following trade show, where we will showcase a variety of products, including new ones. We sincerely invite you to visit us during this busy time. 【 Exhibition Name 】 Automotive Technology Exhibition 2025 YOKOHAMA https://aee.expo-info.jsae.or.jp/ja/yokohama/ (An "online exhibition" will also be held during and around the event period) 【 Dates 】 May 21 (Wednesday) - 23 (Friday), 2024 10:00 AM - 6:00 PM *On the final day, 9:00 AM - 4:00 PM (Online exhibition: May 14 (Wednesday) - June 4 (Wednesday)) 【 Venue 】 Pacifico Yokohama (1-1-1 Minatomirai, Nishi-ku, Yokohama, Kanagawa Prefecture) Our booth number: "Concourse 505"

We would like to extend our heartfelt congratulations on the continued prosperity of your esteemed company. Our company will be exhibiting at the following trade show, where we will showcase a variety of products, including new ones. We sincerely apologize for the inconvenience during your busy schedule, but we would like to invite you to attend this event. 【 Exhibition Name 】 27th INTERPHEX Week Tokyo https://www.interphex.jp/tokyo/ja-jp.html 【 Dates 】 July 9 (Wednesday) - 11 (Friday), 2025 10:00 AM - 5:00 PM 【 Venue 】 Tokyo Big Sight (3-11-1 Ariake, Koto-ku, Tokyo 135-0063)

Nakakin will be exhibiting at 'FOOMA JAPAN 2026 (International Food Industry Exhibition)' held at Tokyo Big Sight. This exhibition proposes "A rich future opened by food technology" through cutting-edge technology, products, and services in food machinery, amidst growing interest in "food safety and security." We aim to facilitate the exchange and dissemination of technology and information related to food machinery, equipment, and associated devices, contributing to the further development of the food industry. We sincerely look forward to your visit.

[Speaker] Academic Visitor, University of Strathclyde, UK Visiting Professor, Offshore Wind Research and Education Center, Kyushu University Senior Researcher, Institute for Sustainable Energy Policies (ISEP) Mr. Yo Yasuda [Lecture Topics] 1. International Trends in Decarbonization and Japan's Position (1) Risks of Fossil Fuel Dependence and Decarbonization as Risk Management (2) Discussions on Decarbonization and Renewable Energy in International Organizations (3) Discussions on Decarbonization and Renewable Energy in Japan (4) Discrepancies Between International and Domestic Discussions (The U.S. is not the world) 2. International Discussions on Large-Scale Introduction of Renewable Energy (1) Electrification and Sector Coupling (Why are EVs and Heat Pumps Advancing?) (2) Externalities and Benefits (Long-Term Perspective and Risk Management) (3) Flexibility (The notion that "renewable energy is unstable" is outdated) 3. Challenges and Solutions for Japan, Methodology for Information Gathering (1) Fake News and Scientific Methodology (2) Non-Scientific Narratives and Evidence-Based Policy Making (EBMP) (3) AI and Specialized Information Retrieval 4. Q&A / Business Card Exchange *Reference: "The Future of 90% Renewable Energy by 2050 - Scenarios and Scientific Basis for Achieving Decarbonization" by Yo Yasuda, Yamato Keikokusha (December 2024)

[Speaker] Akira Yamauchi, President and CEO of Intellectual Property Landscape Co., Ltd. Patent Attorney, AIPE Certified Senior Intellectual Property Analyst [Lecture Topics] 1. What is Physical AI? [1] Industrial Robots [2] Humanoids [3] Autonomous Vehicles as the main fields Overview of the population setting for the three fields and the key players in each field 2. [1] Industrial Robot Analysis 3. [2] Humanoid Analysis 4. [3] Autonomous Vehicle Analysis 5. Summary and Discussion of the Analysis Results for the Three Fields 6. Q&A Session