We will hold a "Thermal Material Seminar" for engineers considering the formulation of thermal materials such as electronic materials, adhesives, and ceramics. Participants will have the opportunity to hear presentations on products and technologies from sponsoring thermal material suppliers (fillers, resins) and engage in individual meetings and sample consultations. Please utilize this seminar and networking opportunity to aid in the search for optimal materials and efficient sample selection and arrangements. ■ Date: November 5, 2025 (Wednesday) 10:00 AM - 5:00 PM (Individual meetings from 3:00 PM to 5:00 PM are optional) ■ Venue: TKP Shinbashi Conference Center Hall 13C ★ Due to limited availability, participants from academic/research institutions, trading companies, and those in sales, planning, and purchasing roles are not eligible to attend. Organizer: BYK Chemie Japan Co., Ltd. Business Development Sponsors: Various raw material suppliers Secretariat: BYK Chemie Japan Co., Ltd. Marketing Services Contact: Marketing.BYK.Japan@altana.com TEL: 06-4797-1456

**Proposal for Additives for Automotive Applications** Challenges and Improvements in Anticipated Paint Design for Automotive Applications Achieving carbon neutrality presents various challenges. These may be improved with various additives. If you could share your concerns, we might be able to offer some suggestions. How about having a free discussion via email or Teams (online) regarding any issues or improvement angles you have? https://www.byk.com/ja/contact ↑ You can also inquire about additives through our webpage. We also accept individual online consultations and in-house seminars. Please let us know your preferences.

In the second part of the seminar hosted by the Technical Information Association, a BYK instructor will be presenting. 【Production of Paste and Setting Conditions for Squeegees in Screen Printing!】 ★ A detailed explanation of the relationship between printing pressure and film thickness! ★ How to choose and use additives for troubleshooting in paste and ink production! Date: July 3, 2025 (Thursday) 10:30 AM - 4:15 PM Venue: Live streaming via Zoom *No lectures will be held at the venue Participation fee: 60,500 yen per person (including tax and materials) with other priority discounts available 1. Production of superconducting paste for screen printing and superconducting connection technology 2. Mechanism of action and usage of additives for screen printing inks (BYK) 3. Stabilization of film thickness in screen printing

We will hold a seminar with a lab tour at the Big Chemie Japan Co., Ltd. Technical Center! (Hosted by the R&D Support Center) This seminar will be the first public presentation of our Technical Center's lab. In this course, you will learn the effective use of additives from the basics, incorporating specific case studies. It is a very valuable program for young engineers, newcomers, and those who are just starting to consider additives. We look forward to your participation! 【Basics of Industrial Additives and Points for Usage and Selection (with Lab Tour)】 Date and Time: July 10, 2025 (Thursday) 12:30 PM - 4:30 PM 【Tentative Program】 - Purpose of Using Additives - Mechanism of Additive Action - Points for Selecting Additives Lab Tour - Application Room - Analysis Room - General Lab Area We will provide clear explanations incorporating specific case studies.

This is a solution seminar featuring the "micronization and dispersion" technology of Ashizawa Fine Tech and the "additives" from Big Chemie Japan. For those with themes related to micronization and dispersion of materials across a wide range of fields such as batteries, electronic components, MLCC, inkjet, automobiles, paints, and pigments, we will approach problem-solving in a hybrid manner using micronization and dispersion machines combined with additive technology. Participants will experience a combination of lectures, actual machine tours, demonstrations, and Q&A sessions, providing a real understanding from the basics to practical applications, and offering a starting point for solutions. ◆ Seminar on Particle Micronization, Dispersion, and Additive Technology – Making particles fine down to the nanoscale, and achieving dispersion and stabilization – Date: June 26, 2025 (Thursday) 10:00 - 15:30 June 27, 2025 (Friday) 10:00 - 15:30 The same content will be presented on both days. ● Cost: Free ● Capacity: 16 participants per day (first-come, first-served basis) ● Format: In-person 【Application Details】 Please refer to the information leaflet.

The instructor from BYK will be speaking at the second part of the technical seminar organized by the Processing Technology Research Association, the publisher of the monthly magazine "Convert Tech." The theme is "Wet Coating." Wet coating is a technique for uniformly coating a base film with resin dissolved in organic solvents or liquids. In the first part, Mr. Chino will cover the basics of wet coating (single-layer and multi-layer) and troubleshooting, while in the second part, our company's additives expert will explain coating troubles and solutions in fine particle dispersion systems. ◆ Seminar on the Basics of Wet Coating (Single-layer and Multi-layer) and Troubleshooting June 12, 2025 (Thursday) <First Part> 10:00 AM - 12:00 PM, 1:00 PM - 3:00 PM Director of CN Consulting Office, Mr. Naoyoshi Chino <Second Part> 3:15 PM - 4:40 PM, Senior Solution Navigator at Big Chemie Japan, Mr. Akihiro Wakabara 【Application Details】 (Pre-registration required; fee applicable) Venue: TKP Iidabashi Business Center or online participation (using Zoom Webinar)

In the second part of the online technical seminar organized by the Processing Technology Research Association, the publisher of the monthly magazine "Convert Tech," a BYK lecturer will present. The topic is "Rheology Control Essential for Coatings." In the first part, Mr. Otsubo will cover the basics of interfacial chemistry and rheology in the coating process, while in the second part, our company will explain the characteristics and usage of rheology control agents suitable for the requirements from the perspective of additives. Basics of interfacial chemistry and rheology in the coating process Characteristics and usage of main rheology control agents June 20, 2025 (Friday) <First Part> 10:00 AM - 3:15 PM Honorary Professor Yasufumi Otsubo <Second Part> 3:30 PM - 4:50 PM, Big Chemie Japan Senior Solution Navigator Akihiro Wakahara [Application and Inquiries] (Pre-registration required; fee applicable) https://ctiweb.co.jp/seminar/cts2025_2/application.html Online distribution Zoom webinar, on-demand participation, archive distribution available (No in-person attendance)

This is an announcement for a live online seminar hosted by the R&D Support Center on February 17, featuring a BYK instructor. We have prepared a highly effective program for young engineers, newcomers, and those who are just starting to consider additives. Please take advantage of this training opportunity! Basics of Paint Additives and Key Points for Usage and Selection [LIVE Broadcast] Date: February 17, 2025 (Monday) 13:00 - 17:00 Live broadcast via Zoom, participation from a web browser is also possible. [Planned Program] - Purpose of using additives - Mechanism of additive action - Key points for selecting additives We will explain these topics clearly, incorporating specific examples. [Seminar Overview & Registration] (Advance registration required, fee applicable)

The theme is "New Antifoaming Agents for Epoxy Paints." From an environmental perspective, there is an increasing trend towards solvent-free, high-solid, and water-based paints. This trend makes it increasingly difficult to eliminate foam, especially in epoxy resin-based paints commonly used for corrosion protection and marine applications. We will introduce case studies of new antifoaming agents that contribute to solving these challenges. ■ Date and Time: July 5, 2023 (Wednesday) 10:30 AM - 11:30 AM ■ Program We have developed new antifoaming agents BYK-1765 and BYK-1789, and we will introduce the products along with application examples. ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/e/A7BPHT3Wvz ■ Registration Deadline: June 26 (Monday)

We will hold the "2023 Paint Additives New Product Presentation - ECS 2023 in Japan -" online. We will introduce new products launched at the ECS exhibition (Nuremberg, Germany) in March 2023. Each item will be available in both live and recorded versions. Please join us at your convenience. We look forward to your participation! ■ Date and time, ■ Program details can be found on our company website. Surface modifiers Rheology additives Defoamers Wetting and dispersing agents ■ Method of holding: Using Microsoft Teams You can participate via an internet browser. ■ How to apply: Please register for participation using the link below. Link: https://forms.office.com/e/JUQHpUTqN2 ■ Application deadline: One week before each event.

BYK measuring instruments (BYK-Gardner) will showcase and introduce optical devices such as the "Hazeguard i," "Glossmeter," and "Wavescan" at the [Kansai] Film Tech Japan (High-Performance Film Exhibition). (Exhibitor: Tetsutani Co., Ltd., the general agent for BYK-Gardner in Japan) Please stop by our booth. ■ Date and Time: May 16, 2023 (Tuesday) 11:00 AM - 11:30 AM Event Period: May 17, 2023 (Wednesday) - May 19, 2023 (Friday) 10:00 AM - 5:00 PM Venue: Intex Osaka Booth Number: 7-9 (Tetsutani Co., Ltd.) Organizer: RX Japan Co., Ltd.

We would like to invite you to an external online seminar in March featuring a BYK instructor. Surface (interfacial) free energy affects various physical properties such as wettability, adhesion, and dispersibility. This seminar is structured in four parts to deepen understanding of the concepts and measurement methods, incorporating applications into the program. The Concept, Measurement, and Applications of Interfacial Free Energy Date and Time: March 24, 2023 (Friday) 10:00 AM - 5:00 PM Live streaming via Zoom In the fourth part from BYK, we will clearly explain the measurement of surface tension and surface energy, along with the correlation to various properties, using easy-to-understand examples, focusing on the theme of "The Concept and Applications of Surface (Interfacial) Free Energy in Coatings, Coatings, and Adhesives." We will also discuss the structure and properties of additives optimal for interfacial control, providing content that will be useful for practical material design. (Pre-registration required; fee applicable) Organized by: Technical Information Association Co., Ltd.

The BYK Paint Additives Department is offering online seminars on various themes. This time, the topic is "Introduction to Wetting and Dispersing Agents." It is an introductory session aimed at engineers who will be involved in dispersion formulation design in coatings. We will start with the basics of what wetting is and what dispersion is, and provide clear explanations on how to select wetting and dispersing agents according to their applications and purposes. We look forward to your participation! ■ Date and Time: November 7, 2022 (Monday) 15:00 - 16:00 ■ Program - What is wetting? What is dispersion? - Structure and function of wetting and dispersing agents - How to choose wetting and dispersing agents ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/r/nfhX1sqVVZ ■ Registration Deadline: October 28 (Friday)

Online Seminar on Additives for Printing Inks Hosted on November 16, 2022 3rd Session: [Surface Modifiers] / Total of 4 Sessions The online seminar series on additives for printing inks is now at its halfway point. The theme for the third session in November is [Surface Modifiers]. We will clearly explain the benefits of surface modifiers that provide wettability to substrates, improve leveling (smoothness), and offer various functions such as slip and surface protection to the coating surface. We look forward to your participation! ■ Date and Time: November 16, 2022 (Wednesday) 15:00 - 16:15 ■ Method of Hosting: Using Microsoft Teams You can participate via an internet browser. ■ Registration Method: Please register for participation using the link below. Link: https://forms.office.com/r/xAAYwCgsU4 ■ Registration Deadline: November 9 [Online Seminar on Additives for Printing Inks] Total of 4 Sessions 4th Session on December 7 (Wednesday) - Waxes

In the webinar hosted by the Processing Technology Research Association, the publisher of the monthly magazine "Convert Tech," we will introduce the surface modifier BYK-3420 for water-based inkjet applications. We will condense useful information and explain it in an easy-to-understand manner. Please join us for the viewing. (Free to attend, limited to 500 participants, pre-registration required) BYK Presentation Schedule: 【Surface Modifier BYK-3420, an Organically Modified Polysiloxane with Excellent Hydrolytic Stability for Water-Based Inkjet】 November 16 (Wednesday) 14:00–14:25 November 17 (Thursday) 14:00–14:25 The content will be the same on both days. Please register according to your convenience and join us for the viewing.

At BYK's Additives Division, we are offering online seminars on various themes. This time, the topic is "Introduction to Defoamers." It is an introductory session aimed at engineers who will be involved in paint formulation design. We will start with how bubbles are generated, provide tips for selecting the optimal defoamer from a wide variety, and clearly explain the methods, timing of addition, and evaluation methods. We look forward to your participation! ■ Date and Time: November 24, 2022 (Thursday) 15:00 - 16:00 ■ Program - What are bubbles? - What are defoamers? - How to use and select defoamers ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/r/Pxm46kXy9y ■ Registration Deadline: November 17 (Thursday)

"December 7th Event" BYK Online Seminar [Additives for Printing Inks - Final Lecture on Waxes] All 4 Sessions The BYK online seminar series on additives for printing inks is finally reaching its last lecture. The theme is [Waxes]. We will introduce unique wax additives and waxes made from renewable materials (biomass raw materials) that have gained attention in recent years. Each function and effect will be explained clearly. We look forward to your participation! ■ Date and Time: December 7, 2022 (Wednesday) 15:00 - 16:00 ■ Method of Hosting: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/r/xAAYwCgsU4 ■ Registration Deadline: November 30

The BYK Additives Division is offering online seminars on various themes. This time, the topic is "Introduction to Surface Modifiers." It is an introductory session aimed at engineers who will be involved in paint formulation design. We will clearly explain the challenges that can be solved and the functions that can be imparted by adding surface modifiers. We look forward to your participation! ■ Date and Time: December 15, 2022 (Thursday) 15:00 - 16:00 ■ Program We will explain the challenges that can be solved and the functions that can be imparted by adding surface modifiers. - What is surface tension? - Solving issues with surface modifiers - Imparting functions with surface modifiers ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/r/aE43AJHUfc ■ Registration Deadline: December 7 (Wednesday)

The Color Materials Association Kansai Branch will host the "Color Material Lecture" on February 8, 2023 (Wednesday), online via Zoom. This lecture will cover the latest materials such as resins and pigments with functional properties. BYK will present on the theme "The Contribution of Additives to Inorganic Particles Noted for Thermal Control and Layer Formation." Please take this opportunity to acquire the latest application information and development tips in the coating field. Color Material Lecture: "Materials with Functional Properties" Date and Time: February 8, 2023 (Wednesday) 9:30 AM - 4:40 PM Online via Zoom Pre-registration and participation fee required Big Chemie Japan Presentation (1:00 PM - 2:00 PM) The Contribution of Additives to Inorganic Particles Noted for Thermal Control and Layer Formation - Non-metal oxide-based particles and layered silicates 1. Heat-dissipating fillers 2. LAPONITE 3. Pickering emulsions 4. Dispersion stabilization 5. Barriers [Organizer] General Incorporated Association Color Materials Association

The Color Materials Association's Inkjet Division will host the 2nd Lecture (online) on November 8 (Tuesday), focusing on the color materials and additives that make up inkjet inks. BYK will present at the end of the program on the theme "How coating additives technology can contribute to achieving the SDGs." We invite you to participate in this lecture as an opportunity to learn about the latest technological trends in the materials market related to cutting-edge inkjet inks. 2022 Color Materials Association Inkjet Division 2nd Lecture Date and Time: November 8, 2022 (Tuesday) 10:00 AM - 5:10 PM Online via Zoom Pre-registration and participation fee required [Organizer] Color Materials Association, General Incorporated Association

In recent years, there has been growing public and scientific concern regarding the use of PFAS (per- and polyfluoroalkyl substances), making it a global topic of regulation in various countries. As part of our environmental initiatives, we will introduce a new PTFE-free micronized wax additive that can replace PTFE-containing wax additives in an online seminar. We look forward to your participation! ■ Date and Time: March 22, 2023 (Wednesday) 10:00 AM - 10:30 AM ■ Program CERAFLOUR 1050, CERAFLOUR 1051, CERAFLOUR 1052 PTFE has many characteristics, and we will focus on wear resistance and scratch resistance, presenting test results that demonstrate the potential of PTFE-free wax additives as alternatives to PTFE-containing wax. ■ Method of Hosting: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/e/CXyJyAxRgE ■ Registration Deadline: March 10 (Friday)

We have received many inquiries in the field of electronic materials and thermal interface materials (TIM), and we will hold an online seminar regarding solutions to various issues using BYK additives. For electronic materials, particularly for TIM applications, we will discuss solutions to problems related to wetting dispersants and foam residue when handling aluminum oxide and aluminum hydroxide. Additionally, for thermal materials, we will report on the domestic examination results of recommended products for pastes using aluminum nitride and boron nitride. We look forward to your participation! ■ Date and Time: May 12, 2023 (Friday) 14:00 - 15:00 ■ Program: - Electronic Materials Applications - Thermal Materials Applications ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/e/UtUWGikqLW ■ Registration Deadline: May 9 (Tuesday)

From an environmental perspective, there is an increasing demand for low-temperature curing types and high-durability coatings in the powder coating field, and we have received numerous inquiries regarding improvements in corrosion resistance and coating performance. BYK offers adhesion promoters that are effective for enhancing corrosion resistance and adhesion for liquid coatings. We are pleased to announce the launch of a new adhesion promoter for powder coatings, BYK-3941 P. In this seminar, we will introduce the product along with application examples. We look forward to your participation! ■ Date and Time: May 16, 2023 (Tuesday) 11:00 AM - 11:30 AM ■ Program Adhesion Promoter for Powder Coatings: BYK-3941 P We will explain the factors affecting adhesion of coatings and the mechanism of action of adhesion promoters, while presenting test results that demonstrate the effectiveness of adhesion promoters across various types of coatings and materials. ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/e/Up8v92q8R1 ■ Registration Deadline: May 9 (Tuesday)

Online Seminar on Paint Additives Vol. 2, 2022, with the theme of "Additives for Architectural Coatings." Mr. Markus Vogel, End Use Manager for Architectural Coatings at BYK-Chemie GmbH (Germany), will be the speaker, introducing BYK's solutions and the latest additive technologies for challenges in architectural coatings. (Japanese interpretation available) We look forward to your participation! ■ Date and Time: June 23, 2022 (Thursday) 15:00 - 17:00 ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/r/q5UtQycsWN ■ Registration Deadline: June 10 (Monday)

In recent years, plastic additives have received many inquiries and adoptions for use in electronic materials. Therefore, we will be holding an online seminar regarding additives for electronic material applications. With the spread of new technologies such as 5G and 6G, materials used in these applications are required to have different functions and performance compared to conventional ones. To further enhance the freedom of material design that you are considering, please make use of BYK additive solutions. We look forward to your participation! ■ Date and Time: - July 29, 2022 (Friday) 9:30 AM - 11:00 AM - August 3, 2022 (Wednesday) 1:30 PM - 3:00 PM The content will be the same on both days. Please join according to your convenience. ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/r/xT6VTjapiX ■ Registration Deadline: July 22 (Friday)

In the webinar hosted by the Processing Technology Research Association, the publisher of the monthly magazine "Convert Tech," we will introduce "Defoamers for Water-Based Coatings Responding to Circular Economy Initiatives." We will condense useful information and explain it clearly. Please join us for the viewing. (Free to attend, capacity of 500 people, pre-registration required) Organizer: Processing Technology Research Association ◆ BYK Lecture Schedule - Same content on both days ◆ [Defoamers for Water-Based Coatings Responding to Circular Economy Initiatives] July 6 (Wednesday) 13:30 - 13:55 and July 7 (Thursday) 13:30 - 13:55 Content Overview: Bio-based water-based defoamers BYK-1740, BYK-1745 User-friendly and easy to add water-based defoamers BYK-092, BYK-1789

The date of the event has been changed from June 23. The online seminar on paint additives 2022 Vol. 2 will focus on "Additives for the Architectural Coatings Sector." Mr. Markus Vogel, End Use Manager for Architectural Coatings at BYK-Chemie GmbH (Germany), will be the instructor, introducing BYK's solutions and the latest additive technologies for challenges in architectural coatings. (Japanese interpretation available) We look forward to your participation! ■ Date and Time: July 27, 2022 (Wednesday) 15:00 - 17:00 ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/r/q5UtQycsWN ■ Registration Deadline: July 19 (Tuesday)

BYK Additives for Printing Inks Online Seminar Held on September 29, 2022 Session 1: [Wetting and Dispersing Agents] / Total of 4 Sessions BYK wetting and dispersing agents, used to provide good dispersibility for organic and inorganic pigments, have many advantages. The dispersion mechanism of solid particles and effects such as ink viscosity stability and transparency will be explained clearly along with their structure. ■ Date and Time: September 29, 2022 (Thursday) 15:00 - 16:15 ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ How to Register: Please register for participation using the link below. Link: https://forms.office.com/r/xAAYwCgsU4 ■ Registration Deadline: September 22 【Additives for Printing Inks】BYK Online Seminar Total of 4 Sessions Session 2: October 20 (Thursday) Defoamers Session 3: November 16 (Wednesday) Surface Modifiers Session 4: December 7 (Wednesday) Waxes

The BYK Additives Division will hold an online seminar on additives for UV-curable resins and coatings. We will introduce solutions using BYK additives in the areas of improving film properties, enhancing film conditions, utilizing functional particles, imparting design and functionality, as well as water-based and biomass additives. We hope you will take advantage of this morning activity and online seminar. We look forward to your participation! ■ Date: Tuesday, May 31, 2022 10:00 AM - 11:30 AM ■ Method: Using Microsoft Teams You can participate via an internet browser. ■ Registration: Please register for participation using the link below. Link: https://forms.office.com/r/UkKULemkYU ■ Registration Deadline: Friday, May 20

The BYK Paint Additives Division will hold an online seminar on "Mixing Considerations and Recommended Products for Thermal Conductive Fillers" as the third installment in 2022. We will propose methods for selecting suitable filler types when mixing boron nitride (BN) and aluminum nitride (AlN) with silicone and epoxy systems, and introduce BYK products that have a thinning effect in each system. (Data on electrical properties required for thermal conductive materials is not included.) We are preparing content that will be helpful for solving challenges. We look forward to your participation! ■ Date and Time: August 31, 2022 (Wednesday) 15:00 - 16:00 ■ Method of Holding: Using Microsoft Teams You can participate via an internet browser. ■ Registration Method: Please register for participation using the link below. Link: https://forms.office.com/r/kfPPaNwb65 ■ Registration Deadline: August 22 (Monday)