June 6, 2023
Taiyo Nippon Sanso CorporationAstomos Energy Corporation

Notice Regarding Conclusion of Final Agreementfor Management Integration of LP Gas BusinessTaiyo Nippon Sanso Corporation (“TNSC”, President Kenji Nagata), a member of the Nippon Sanso
Holdings Group, and Astomos Energy Corporation (“Astomos Energy”, President MitsuruYamanaka) hereby announce that the two companies have reached a final agreement regarding theimplementation of management integration (“the Integration”) of their respective 100% -owned
subsidiaries Taiyo Nippon Sanso Energy Corporation (“Taiyo Nippon Sanso Energy”) and AstomosRetailing Corporation (“Astomos Retailing”), which was announced in the “Notice Regarding Startof Consideration of Management Integration of LP Gas Businesses” on February 6, 2023, as a resultof discussion and consideration, and have concluded an agreement regarding management
integration as well as a shareholders agreement.

1. Background to the Integration and Objectives
In Japan’s national energy policy, LP gas has been given a high rating for its resilience. Its
resilience is due to the fact that it is a distributed power source that is easily accessible both innormal times and natural disaster situations. As a result, LP gas is positioned as a crucial energy
source that will remain indispensable in the future. Meanwhile, LP gas also faces majordifficulties. It has been experiencing a structural decline in demand and increased responsibilities
regarding its ability to contribute to a carbon-neutral society.
In such an environment, the two companies held repeated discussions on the Integration in thespirit of fairness, justice, and equality. As a result, they reached a final agreement after confirmingthat integrating or mutually utilizing the management resources related to LP gas held by the twogroup companies to be integrated, in addition to Taiyo Nippon Sanso Energy and Astomos
Retailing, would improve the efficiency and robustness of the supply chain and expand solutionsin the decarbonization and digital fields, and contribute to building more trusting relationships
with customers as well as the development of the LP gas industry and enhancement of thecorporate value of the integrated group of companies.

2. Overview of the Integrated Company① Company name

Astomos Retailing Corporation② Corporate Headquarters

Chiyoda-ku, Tokyo③ Registered Head Office

Yonago, Tottori Prefecture④ Capital¥300 million⑤ Shareholders

Astomos Energy 65%⑥ Net sales

Approx. ¥44.0 billion (estimated)⑦ LP gas sales volume

Approx. 240,000 tons (estimated)⑧ Number of employees

Approx. 1,140 (estimated)

1TNSC 35%

3. Effective Date of Merger
January 1, 2024 (planned)
The aforementioned effective date of the merger may be changed in the future due to filings
with the Japan Fair Trade Commission and other relevant authorities, acquisition of permits andapprovals, and other reasons in the procedures related to the Integration.
Based on this integrated partnership, TNSC and Astomos Energy will further promote the business ofLP gas for consumer use and discuss industrial and wholesale LP gas sales with a focus on developing
demand in the industrial LP gas business. At the same time, by mutually harnessing TNSC’s network fordeveloping diverse gas business, including LP gas, and technical capabilities, and Astomos Energy’s
supply chain which extends from overseas procurement to retail sales focused on LP gas, both companies
will continue to work toward the realization of a sustainable society through the safe and reliable use ofLP gas by customers and their contributions to a carbon-neutral society.

The signing ceremony held on June 2, 2023
(Reference) Overview of the Companies
NameAddress

Taiyo Nippon Sanso
Corporation
Shinagawa-ku, Tokyo

Representative
CapitalMajor
Shareholders

Kenji Nagata¥1,500 million
Nippon Sanso Holdings
Corporation 100%

Description ofBusiness

Manufacture and sale ofoxygen, nitrogen, argon,carbon dioxide gas,liquefied petroleum gas,and specialty gases suchas semiconductormaterials gases, as wellas various othercompressed gases andliquefied gases

Taiyo Nippon Sanso
Energy CorporationKanie Town, Aichi
Prefecture
Masahisa Kanzaki¥100 million
Taiyo Nippon Sanso
Corporation 100%
Manufacture and sale ofliquefied petroleum (LP)gas, including LP gas for
consumer use

2

Astomos Energy
Corporation
Chiyoda-ku, Tokyo

Astomos Retailing
Corporation
Chiyoda-ku, Tokyo

Mitsuru Yamanaka¥10,000 million
Idemitsu Kosan Co., Ltd.
51%
Mitsubishi Corporation
49%
Import, purchase and saleof liquefied petroleum gas

Taiji Nambu¥300 million
Astomos Energy
Corporation 100%
Manufacture and sale ofliquefied petroleum (LP)gas, primarily LP gas for
consumer use