November 22, 2023
ADEKA CORPORATIONADEKA to construct a new research building— Building an R&D structure for creating innovative new products —ADEKA CORPORATION (President and Chief Executive Officer: Hidetaka Shirozume; hereafter,“ADEKA”) announced today that it has decided to construct a new research building on the premisesof the Kuki R&D Center to improve its R&D capabilities in the field of electronics and IT materials.
The total construction cost will be approx. 10 billion yen, and the building is planned to be completedin January 2026.
AD⁠⁠EKA has been advancing the expansion of its business to achieve ADEKA VISION 2030: an
innovative company contributing to a sustainable future and affluent lifestyles, which is its vision for2030. ADEKA decided to construct the building to achieve the continued expansion of its ALD
materials* for semiconductors, which are core products in its electronics and IT materials businessand its peripheral materials business, and a major leap forward in process materials forsemiconductor packages (post-process).
The new research building will serve as the core research center for deepening and integratingtechnologies for the R&D of chemical products and for developing cutting-edge semiconductormaterials. It will play a core role in R&D aimed at expanding the electronics and IT materials business.
In the functional chemcals business, ADEKA will change its business style from one based on theprovision of materials to a solution-based style in which it will provide essential game-changing
materials to the entire market, to ensure the timely provision of performance and products which are in
demand in the mobility and electronics markets.
Further, ADEKA will establish processes for the evaluation, analysis and deposition ofsemiconductor products at domestic and overseas facilities including the ADEKA KOREA R&D Centerin Korea and ADEKA FINE CHEMICAL TAIWAN CORP. Through these and other initiatives, ADEKA
will work to create innovative new products in a solid R&D structure and through collaborations withGroup companies and close internal cooperation.
*ALD: atomic layer deposition. It is a method used in the semiconductor manufacturing process in which flat, elaborate thin films(such as nitride films and oxide films) are formed by controlling film thickness at the atomic layer level.

▲ ＡＤＥＫＡ Kuki R&D Center “The new research building″ Rendering of Completion〈Continued on the next page〉

■ Outline
Location

20 Showanuma, Shobucho, Kuki City, Saitama Prefecture

Total
construction cost

Approx. 10 billion yen

Scale

Seven floors above ground, steel construction
Building area: 1,932 square meters
Total floor area: 11,567 square meters

Key facilities

Laboratory, clean room, analysis lab, meeting room and other facilities

Construction

Obayashi Corporation

Schedule

Commencement of construction: April 2024
Completion: January 2026 (plan)■ Features of the new research building
Its greatest feature is a clean room with an area greater than 850 square meters on a single floor.
With high expandability and freedom, the clean room will enable the timely development of new products
catering to customer needs.
In addition, the new building will come with convenient, environmentally friendly functions for the future
as a next-generation research facility guided by the concepts of technology integration, the health andsafety of researchers and consideration for the environment.
The design of the new research building will also consider energy efficiency and the reduction ofenvironmental impact. According to the evaluation and review of its basic design, it is expected that thebuilding will acquire a Rank A or higher certification in the Comprehensive Assessment System for Built
Environment Efficiency (CASBEE).**The Comprehensive Assessment System for Built Environment Efficiency (CASBEE) is a method of comprehensively assessing and rating theenvironmental performance of buildings developed mainly by the Institute for Built Environment and Carbon Neutral for SDGs.

[Concept]
Combiningtechnologies
Health andsafety

A facility where researchers can always create new products and ideas
through technological exchange
Providing an environment where employees can work safely in good health

Consideration of
the environment

Developing a comfortable R&D environment by reducing environmental
impact through efforts such as energy efficiency and consideration for the local
environment▲ A mezzanine aimed at encouraging communication（2.5、3.5Floor）〈Continued on the next page〉

■ Products to be developed in the new research building and the backgroundThe new research building will play the core role in R&D for expanding the electronics and IT materials
business, serving as the core research center for the development of ALD materials and peripheral
materials for advanced semiconductors and new process materials for semiconductor packages (postprocess).
It is forecast that semiconductor packages, which are expected to expand in the future, will become
more highly integrated, through developments such as 2.xD and 3D packaging. The development of thematerials that will be needed in this process, such as interposers, insulating materials and underfill
materials, has been energized. The development of process materials for post-processes must to beworked in ways that integrate the individual laboratories’ information networks and technologies. ADEKA
will surely link these development themes to actual demand. In the new research building, ADEKA will
focus its efforts on the development of new ALD materials for DRAM, NAND, and logic semiconductors
and the basic design of ALD materials, such as the basic design of film-forming aids, baseline
assessment and materials compatibility.
The ADEKA KOREA CORP. R&D Center, which is located in an overseas R&D base, will work toestablish new disposition processes using cutting-edge materials, new reaction gases and film-forming
aids to be developed at the new research building.
ADEKA will deliver cutting-edge materials from oversea bases in Korea, where it is pushing forwardwith aggressive investment for future growth, and its base in Taiwan, where the production and supplyof materials for advanced logic semiconductors has become possible, as well as at the Chiba Plant,
where production equipment for photoacid generators has been completed, and other bases. ADEKA
will push forward with the expansion of the domain through close internal cooperation, aiming to be aworld-leading semiconductor materials manufacturer.
Supplement: Information about ADEKA’s Electronics and IT Materials Business
ADEKA provides a large number of indispensable advanced materials in the semiconductor and display
fields for the development of an advanced ICT society. The ADEKA ORCERA Series of high-k materials
for advanced semiconductor memory have the largest share of the global market.*
ADX 2023 (from fiscal 2021 to fiscal 2023), the medium-term management plan of ADEKA Group,
positions the next-generation ICT field as one of the important fields to enhance scale dramatically.
As a result of aggressive investments focused on advanced semiconductor materials, the amount ofcapital invested (including approved investments) has been above 120% of the target investment
amount in the electronics and IT materials business under ADX 2023, far exceeding the plan.
Major capital investment in the electronics and IT materials business• Increase of the high-k materials for advanced semiconductor memory production capacity (2.3 billionyen/Korea: Operation scheduled to begin in FY2024)• Building a new plant for advanced logic semiconductor materials (2.5 billion yen/Taiwan: Operation
scheduled to begin in FY2024)• Increase of the high-k materials for advanced semiconductor memory production capacity (2.1 billionyen/Korea: Operation scheduled to begin in FY2023)• Expansion and relocation of ADEKA KOREA R&D Center (1.3 billion yen/Korea: Relocated in FY2023)• Increase of the photoacid generators for cutting-edge photoresists production capacity (2.7 billion
yen/Japan: Operation begun in August 2023)*From 2020 Current Status and Future Prospects of Semiconductor Material Market by Fuji Chimera Research InstituteInc.

■ Contacts
ADEKA CORPORATION
Publicity ＆ Administration group , Legal Affairs ＆ Publicity Department
E-mail: somu@adeka.co.jp