The Ichihara Techno Center of Ryuki Engineering will be reborn. The new name will be 'Ryuki_Lab.' Completion is scheduled for autumn 2024. It will become the center of our research and development. The new facility will be expanded to approximately 1,126 square meters, boasting three times the current size. This expansion aims to accelerate innovations that address global environmental challenges, seeking to create solutions for a sustainable future through improved efficiency in research testing and further enhancement of technological development capabilities. ----------------------------------------------- Facility Name: Ryuki_Lab. Address: 2-15-4 Aoyagi, Ichihara City, Chiba Prefecture (relocation) Site Area: Approximately 1,126 square meters Total Floor Area: Approximately 1,399 square meters Scheduled Completion: Autumn 2024 -----------------------------------------------

【May 24 (Wed) - 26 (Fri), 2023 at Tokyo Big Sight】 The exhibition aims to raise awareness of environmental conservation by showcasing various technologies and services that address environmental issues, with the goal of stabilizing national life and promoting the development of the environmental industry. Our company will exhibit water treatment equipment, including "filtration devices," as an environmental solution and engineering manufacturer, and we will also unveil new products. 【Exhibition Overview】 2023 NEW Environmental Exhibition Date: May 24 (Wed) - 26 (Fri), 2023 Time: 10:00 AM - 5:00 PM (last day until 4:00 PM) Location: Tokyo Big Sight, East Hall Our Booth: East Hall 4, Booth D418 =============== This time, we will present a demonstration of water treatment equipment, including the latest technology "ECO Clean LFP," inspired by the concept of a "Neo Pure Café." Additionally, we will demonstrate high-precision filtration technology using functional powders and filters in a seminar format, allowing attendees to experience environmental solution technologies firsthand. We look forward to your visit.

Our company will exhibit at the International Powder Technology Exhibition Tokyo 2022, which will be held from December 7 (Wednesday) to December 9 (Friday) at Tokyo Big Sight. This exhibition is a comprehensive showcase of the latest information on powder technology, focusing on powder equipment and devices. As an environmental solutions and engineering manufacturer, we will display water treatment devices, including our "filtration equipment," and unveil new products. 【Exhibition Overview】 International Powder Technology Exhibition Tokyo 2022 Date: December 7 (Wednesday) to December 9 (Friday), 10:00 AM to 5:00 PM Location: Tokyo Big Sight, East Hall Our Booth: East Hall 3, Booth 3J-12

We are pleased to announce that our company will be featured in the NHK overseas content program "NHK WORLD" titled "Japan’s Top Inventions." In the latter half of the program, there will be a segment introducing "products that hold a top share in niche fields," where we will be featured with the theme of "dust collectors for tunnel construction that protect the safety of workers on job sites around the world." *The broadcast will include English subtitles and narration. Program Overview NHK WORLD "Japan’s Top Inventions" (Broadcast on NHK World TV in approximately 160 countries and regions) Initial Broadcast Date and Time - November 26, 2022 (Saturday) 14:10 - 14:40 Rebroadcasts - November 27 (Sunday) 23:10 - 23:40 - November 28 (Monday) 7:10 - 7:40 - December 2 (Friday) 4:00 - 4:30 How to Watch Internet Smartphone app "NHK WORLD," CS channels, etc.

We will be exhibiting at the 15th Kawasaki International Environmental Technology Exhibition, which will be held at Caltz Kawasaki from November 17 (Thursday) to November 18 (Friday). The exhibition will showcase a wide range of environmental technologies, from those that respond to domestic and international environmental issues to cutting-edge technologies aimed at solving global environmental problems. It serves as a platform to communicate from Kawasaki to both domestic and international audiences, as well as a venue for business matching between exhibiting companies and organizations and businesses from around the world. As an environmental solutions and engineering manufacturer, we will display water treatment equipment, including "filtration systems," and unveil new products. 【Exhibition Overview】 15th Kawasaki International Environmental Technology Exhibition Dates: November 17 (Thursday) to November 18 (Friday), 2022, from 10:00 AM to 5:00 PM Venue: Caltz Kawasaki, 1-1-4 Fujimi, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture Our Booth Number: A-09 Official Website: https://www.kawasaki-eco-tech.jp/

Our company will be exhibiting at the 2022 NEW Environmental Exhibition held at Tokyo Big Sight from May 25 (Wednesday) to May 27 (Friday). As an environmental solution and engineering manufacturer, we will have booths in "Area 2"! Exhibit 1: Water Treatment Equipment Booth (East Hall 4, Booth N405) We will showcase water treatment equipment, including "filtration systems," and unveil new products! Exhibit 2: Disaster Waste and Recovery/Reconstruction Measures Booth (East Hall 3, Booth G300) In collaboration with Entex Co., Ltd., we will debut the "Disaster Mixed Soil Separation System" (DIMS), aimed at rapid disaster recovery (reconstruction)! Pre-registration for entry is here! https://nexpoinv.jp/ 【2022 NEW Environmental Exhibition Overview】 Dates: May 25 (Wednesday) to May 27 (Friday) Hours: 10:00 AM to 5:00 PM (until 4:00 PM on the last day) Venue: Tokyo Big Sight East Exhibition Hall Our booth numbers: Exhibit 1: Water Treatment Equipment Booth (East Hall 4, Booth N405) Exhibit 2: Disaster Waste and Recovery/Reconstruction Measures Booth (East Hall 3, Booth G300) *Please note that the content of the two booths is different, so be careful when you visit.

Ryuki Engineering is currently holding a virtual exhibition! We are showcasing water treatment equipment, including filtration systems! New products and technologies are also being revealed! The booth from the recently held "INCHEMTOKYO2021" has been recreated, allowing you to enjoy the atmosphere of a real exhibition. This is a must-see for those who couldn't attend "INCHEMTOKYO2021"! You can watch product videos, download catalogs, and make inquiries through the link page. Please visit our booth online! ^^ *To prevent character garbling, please turn off your browser's automatic translation feature.

A digital broadcasting station for engineers involved in manufacturing and research and development, 'Aperza TV' (operated by Aperza Inc.) is currently hosting a webinar. This time, we are discussing the theme, "Challenging Zero Wastewater! Can Water Recycling Technology Reduce Water Supply and Sewerage Costs by 90%?!" The speaker is Hitoshi Yamauchi from our Development Department, who writes the environmental column "The Complete Map of All Nations" featured on our company website. Aperza TV is available for free viewing, so please check it out at the URL below! https://tv.aperza.com/watch/215 *Please note that it cannot be viewed on Internet Explorer (please use Microsoft Edge or Chrome). □ Overview In recent times, companies are being questioned about their responses to environmental issues, and "wastewater treatment" has become a challenge for many factories. Manufacturer Ryuki Engineering is solving the challenges of factory wastewater with the latest technology of "membrane + powder," significantly reducing the costs of water supply and sewerage while achieving the previously difficult task of water recycling. This technology contributes to the achievement of the SDGs.

Our company will be exhibiting at the "Water Treatment Solutions for Industry (Water Innovation)" within INCHEM TOKYO 2021, which will be held at Tokyo Big Sight from November 17 (Wednesday) to November 19 (Friday). This exhibition is a specialized event for water treatment technology aimed at promoting water treatment products and technologies for the realization of environmentally friendly manufacturing processes. As an environmental solutions and engineering manufacturer, we will showcase water treatment equipment, including our filtration systems, and unveil new products. 【Exhibition Overview】 INCHEM TOKYO 2021 Water Treatment Solutions for Industry (Water Innovation) Dates: November 17 (Wednesday) to 19 (Friday), 2021, 10:00 AM to 5:00 PM Venue: Tokyo Big Sight South Exhibition Hall Our booth number: S1-CO3 Visitor registration is now open! Please register using the link below.

Ryuki Engineering Co., Ltd. will hold the "Ryuki Engineering 5.24 Declaration" to announce its efforts to improve safety. On that day, we will report on the safety initiatives and safety guidelines we have implemented over the past year. Date and Time: May 24, 11:45 AM to 1:45 PM Venue: Yuzawa Toei Hotel

As stated in the title, we will hold an inauguration ceremony. Date and Time: February 6, 2015, from 11:00 AM to 2:00 PM Venue: The Prince Sakura Tower Tokyo, 2nd Floor http://www.princehotels.co.jp/sakuratower/access/ ≪Contact Information for Inquiries≫ Person in Charge: Sawame from the Construction Sales Department / Kaito from the Management Department Phone: 0120-449-881 (Toll-Free)

Dear Sir/Madam, I hope this message finds you in good health and spirits as we approach the end of the year. I would like to inform you that there have been changes to our company's executives as detailed below. Moving forward, all of our employees are committed to putting forth even greater efforts for the development of our business, and we kindly ask for your continued support and patronage. Please accept this letter as a formal greeting. Sincerely, Details: Chairman of the Board: (New) Akira Nishimura President and CEO: (New) Tsukasa Nishimura (Formerly Akira Nishimura) End of message.