Thank you very much for your continued patronage. We are pleased to announce that our Lubricants Division in the Chubu region will be holding the 2025 Practical Lubrication Engineering Seminar - Rust Prevention Edition. By simply changing lubricants, it is possible to reduce processes and save energy. We will also explain effective lubrication management. Participants have expressed their appreciation for the opportunity to exchange information with other companies. <Content> Introduction to lubricants, methods for on-site improvement using high-performance lubricants, demonstrations, Q&A, etc. *Please check the attached file for details. <Date and Time> June 10, 2025 (Tuesday) Start time: 10:00 AM (Reception starts at 9:30 AM) <Venue> Wink Aichi 4-4-38 Meieki, Nakamura Ward, Nagoya City, 450-0002 <How to Apply> Please contact us at the address below. Idemitsu Kosan Co., Ltd. Lubricants Division, Chubu Lubricants Section, Hiroko Hiroko Email: GX_chubu_LO@idemitsu.com <Seminar Fee> Seminar fee: Free Networking event (membership fee): 1,000 yen We look forward to your participation. Thank you very much for your consideration.

Thank you very much for your continued patronage. We are pleased to announce that our company’s Chubu Lubricants Division will hold the 2025 Practical Lubrication Engineering Seminar - Rust Prevention Edition, as detailed below. <Target Audience> Individuals involved in the maintenance of machinery and production technology at factories, particularly those handling "rust prevention oils." <Content> Overview of lubricants, methods for on-site improvement using high-performance oils, demonstrations, Q&A, etc. *Please check the attached file for more details. <Date and Time> June 10, 2025 (Tuesday) Start time: 10:00 AM (Registration begins at 9:30 AM) <Venue> Wink Aichi 4-4-38 Meieki, Nakamura Ward, Nagoya City, 450-0002 2-minute walk from Exit 5 of the Unimall underground shopping area <Registration Method> Please contact us at the address below. Idemitsu Kosan Co., Ltd. Lubricants Division, Chubu Lubricants Section, Hiroshi Hirono Email: GX_chubu_LO@idemitsu.com <Seminar Fee> Seminar fee: Free Social gathering (membership fee): 1,000 yen We look forward to your participation. Thank you very much for your consideration.

Thank you very much for your continued patronage. We will be holding the 2024 Cutting Heat Treatment Research Meeting (ZOOM Online). 【Introduction to Seminar Content Part 1】 We are pleased to have Professor Emeritus Yamane from Hiroshima University Graduate School of Engineering as a speaker, who will give a lecture on the effects of cutting oils from the perspective of cutting conditions. It is known that the effects of cutting oils vary significantly depending on "cutting conditions," such as the work material, tools, the method of oil supply, and machine tools. In this lecture, we will consider the reasons behind the relationship between cutting conditions and the effects of cutting oils, and explain the thinking necessary for effectively using cutting oils. We hope you will participate and find it useful for your daily activities. We will introduce other lecture contents tomorrow. <Schedule> Date: February 7, 2025 (Friday) 10:00 AM - 5:00 PM (Login starts at 9:30 AM) <Registration Method> *Pre-registration required Participation Fee: Free Registration Deadline: January 31, 2025 (Friday) <URL for Information> https://www.idemitsu.com/jp/business/lube/news/240106.pdf

32nd Japan International Machine Tool Fair ◆ Tokyo Big Sight (Tokyo International Exhibition Center) ◆ November 5 (Tuesday) - November 19 (Friday), 2024, for 3 days ◆ Exhibited products: Lubricants and greases that contribute to improving factory productivity and reducing environmental impact - "Water-soluble cutting oil" that significantly reduces replenishment volume - "Lubricants and greases for equipment" that contribute to CO2 reduction - "Lubrication management technology and sensors" - "Next-generation lubrication solutions" JIMTOF HP https://www.jimtof.org/jp/index.html ~ We look forward to your visit. Please wait for further updates. ~

Thank you very much for your continued support. We are pleased to announce the 2024 Cutting Heat Treatment Research Meeting, which will be held as follows. This year, it will be conducted online via ZOOM. < Date and Time > February 7, 2025 (Friday) Start Time: 10:00 AM (Login starts at 9:30 AM) Cutting Part: 10:10 AM Heat Treatment Part: 2:10 PM < How to Apply > This event will be conducted by reservation only. Participation Fee: Free Application Deadline: January 31, 2025 (Friday) *Please check the details at the provided URL. We look forward to your participation. Thank you very much. ◆ Seminar Information URL https://www.idemitsu.com/jp/business/lube/news/240106.pdf