RION Co., Ltd., established in Tokyo in 1944, specializes in environmental noise monitoring and acoustic measurement. As a world leader in sound level meters, RION develops and manufactures all components in-house, ensuring high accuracy and reliability. The company provides comprehensive solutions for airport noise management, offering measurement instruments and software that help track aircraft noise and flight path data, fostering better relationships with surrounding communities.

Taisei Corporation, established in 1873, is one of Japan's top five construction companies and a recognized leader in airport construction. With a proven track record in building major international airports, including Tokyo Haneda International Airport and Qatar Hamad International Airport, the company specializes in both terminal construction and airport system integration. Leveraging its expertise in engineering and infrastructure development, Taisei Corporation strives to deliver high-quality, sustainable solutions that meet the evolving needs of the aviation industry.

Airport Facilities Co., Ltd. is a TSE Prime listed company specializing in the construction, operation, and management of critical airport infrastructure in Japan. The company provides multipurpose buildings for offices and crew training, hangars, air cargo terminals, aircraft washing, and sewage treatment facilities. Additionally, it manages central heating, air conditioning, water and sewage systems, and shared telecommunications within airports, supporting efficient and sustainable airport operations.

Sugie Seito Co., Ltd., founded in 1896, is a Japanese manufacturer specializing in underground cable protection ducts. With over a century of expertise, the company has been safeguarding essential communication and power infrastructure. Its CERA-DUCT GLOBAL system is designed for sustainability, incorporating 50% recycled materials while maintaining high durability and environmental efficiency. Sugie Seito is committed to contributing to a sustainable society by providing long-lasting, eco-friendly infrastructure solutions.

Tokyo Airport Heating & Cooling Co., Ltd. specializes in providing air conditioning and heating solutions for various facilities at Tokyo International Airport. The company ensures energy-efficient climate control systems to enhance operational sustainability and space-saving infrastructure within the airport. Their services contribute to resource efficiency and environmental sustainability in aviation facilities.

Kokusai Denki Electric Inc. (formerly Hitachi Kokusai Electric) was founded in 1949 as Kokusai Electric and later merged with Hitachi Denshi and Yagi Antenna in 2000, forming Hitachi Kokusai Electric. In December 2023, the company became part of the Nisshinbo Group and reverted to its original name in December 2024. Specializing in wireless communication and video solutions, the company provides advanced technologies for public safety, infrastructure, and video transmission. Through the integration of video and wireless technologies, Kokusai Denki Electric Inc. offers innovative solutions that address social challenges and contribute to a more sustainable and secure society.