Achieving a Society Coexisting with Nature

If resin pellets (a few millimeters in size), which are the raw material for plastic products, leak outside of factory premises, they will become marine plastic waste. We have previously implemented measures such as installing wire mesh in rainwater gutters to prevent resin pellets spilled onto roads from leaking outside of factory premises, but in 2019 we formulated the Toyo Seikan Group Resin Pellet Leakage Prevention Guidelines to thoroughly manage the situation with the aim of achieving zero leakage. These guidelines are implemented within each company's environmental management system, including "identifying potential leakage locations and considering and implementing prevention measures," "daily management," and "audits."

Example of pellet collection screen installation (rainwater tank)

Ion Culture, jointly developed by TOYO GLASS Ltd. and Fudo Tetra Co., Ltd., is a glass product whose composition has been adjusted so that components such as ferrous iron, silica, and phosphate ions, which promote the growth of marine plants, slowly dissolve into water.
The "Ion Culture Plate" is a mortar plate with Ion Culture on its surface, which is used to grow large seaweed along the ocean coast and create fishing grounds. By attaching it to the surface of tetrapods in ports and on the coast, it promotes the growth of seaweed, contributing to the creation of a blue carbon ecosystem.
This project aims to contribute to the creation of a blue carbon ecosystem in the waters surrounding the Osaka-Kansai Expo site by utilizing the track record and experience of both companies, Ion Culture and Tetrapod, in creating seaweed beds.
Ion Culture plates that dissolve iron, silicon, and other nutrients necessary for seaweed growth are attached to the tetrapods to promote growth, aiming to quickly create a seaweed bed. In addition, spore bags containing wakame seed threads and mother algae in natural mesh bags are attached around Ion Culture plates to serve as a source of wakame spores.
Installation will begin in December 2024, and after installation, surveys of coverage (the percentage of the block surface covered by growing seaweed) will be conducted twice a year through underwater visual observation.

Toyo Seikan Group launched a project to restore eelgrass beds in August 2025 to restore "blue carbon," which has a CO₂ absorbing effect, and to conserve biodiversity. This project utilizes "Ion Culture," an algae propagation material jointly developed by TOYO GLASS and Fudo Tetra Co., Ltd., to observe and exhibit eelgrass growth at the Sendai Uminomori Aquarium, and will also collaborate with Inoka Co., Ltd. to scientifically verify its growth promotion effects at a laboratory within Takanawa Gateway City. Going forward, the Group will work with fisheries cooperatives and local governments in Miyagi Prefecture to introduce the product to coastal areas and restore eelgrass beds, aiming for nationwide expansion and contributing to the creation of a decarbonized society and a society in harmony with nature.

Toyo Seikan Group Holdings As part of the "OPEN UP! PROJECT," a project aimed at realizing a more prosperous society through innovation by confronting various issues, Seadling Pte. Ltd., a Singaporean startup company focusing on sustainable seaweed farming and the development of seaweed functional ingredients. Through this investment, together with Seadling and other co-creation partners, we will contribute to the establishment of a seaweed supply chain and the expansion of its applications. In addition, we will contribute to building a sustainable marine environment in Asia.

Nippon Tokan Package is participating in the Hokkaido Corporate Forest Creation initiative being promoted by the Hokkaido Prefectural Government. With the cooperation of the Numata Town Office in Hokkaido, we leased approximately 0.5 hectares of forest in Numata Town, named it "DANDAN Forest," and began forest development activities in September 2023.
In fiscal 2024, employees from across the country spent four months from June to September cutting down trees and building fences and fire pits for sheep farming, engaging in activities that allowed them to interact with nature.

Toyo Kohan Kudamatsu Plant is committed to forest conservation activities, taking into consideration the prevention of global warming and the importance of water. In October 2023, the plant participated in the 27th Town, Forest and Water Exchange Meeting, sponsored by the Shunan Agriculture, Forestry and Fisheries Office of Yamaguchi Prefecture, which was held at Fureai no Mori, located upstream of Sugano Dam in Shunan City, Yamaguchi Prefecture, the source of industrial water used by the Kudamatsu Plant. Approximately 200 volunteers from companies in Yamaguchi Prefecture and the Shunan region participated in this event. At the exchange meeting, volunteers used saws and other tools to cut down shrubs and remove dead trees, working to maintain the forest.