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| Japan Event Industry Promotion Association | ||||||||
| Japan Office Furniture Association | ||||||||
| 大阪ディスプレイ協同組合 | ||||||||
| Kohyou Trading Co., Ltd. | ||||||||
| 愛知名古屋ディスプレイ協同組合 | ||||||||
| 東京ディスプレイ協同組合 |
Showa 32: Koyu Bussan Co., Ltd. established
Koyou Bussan Co., Ltd. is established.
Showa 43: Koyu Bussan started rental business for construction sites
Koyou Bussan starts a rental service for construction sites.
Showa 45: Koyu Lease Co., Ltd. established (separated from Koyu Bussan's rental division)
Koyou Lease Co., Ltd is established. : (Spun off from the Koyou Bussan Rental Department.)
Showa 55: New headquarters of Koyu Group built in Akasaka, Minato-ku
A new building of the Koyou Group is constructed in Akasaka, Minato-ku, Tokyo.
Heisei 1: Centralized data management using Office Computers
Data management systems are unified into an office computer.
Heisei 8: Started rental business for real estate sales centers
Rental service for real estate sales centers starts.
Heisei 11: Started recycling shop business for office equipment, electrical appliances, furniture, etc. (Nationwide expansion of 'Rista' recycling shop)
Recycle shop business of office equipment, electric appliances, furniture, etc. starts. : (Nationwide expansion of recycle shops “ReSTA”)
Heisei 12: Started rental business for events
General rental service for events starts.
Heisei 15: Implemented core internal system, completing nationwide information network
The introduction of an internal core system completes a nationwide information network.
Heisei 17: Koyu Logistics Co., Ltd. established (logistics division separated from Koyu Lease)
Koyou Logi-X Co., Ltd. is established. : (The logistics department spins off from Koyou Lease.)
Heisei 18: Koyu Inotex Co., Ltd. established (IT and repair service division separated from Koyu Lease); started corporate rental business
Koyou Innotex Co., Ltd. is established. : (The IT and repair service department spins off from Koyou Lease.) : Rental service for corporations starts.
Heisei 19: Started rental business for agents; started facility management business
Rental service for agencies starts. : Facility management service starts.
Heisei 20: Rista Co., Ltd. established (separated from Koyu Lease's recycling shop division)
ReSTA Co., Ltd. is established. : (The recycle shop department spins off from Koyou Lease.)
Heisei 22: Started Smart Rental System business
Smart rental system service starts.
Heisei 25: Started rental office and tenant brokerage service business
Rental office and tenant brokerage service starts.
Heisei 26: ONE Designs Co., Ltd. established (integrated Milan, Koyu Lease (interior division), and Work Station interior business); Koyu Lease increased capital to 90 million yen
ONE Designs Co., Ltd. is established. : (Milan, Koyou Lease (Interior department) and interior business of Work Station are unified.) : Koyou Lease increases its capital to 90 million yen.
Heisei 27: Started rental service for women working at construction sites
Rental service for women working at construction sites starts.
Year 28 of Heisei (2016): Koyou Lease Co., Ltd. changed its name to Koyou Rentia Co., Ltd.; head office moved to Shimbashi, Minato-ku; started operation of a system for individual management of rental items using IC tags.
The name of Koyou Lease Co., Ltd. is changed to Koyou Rentia Co., Ltd. The head office is moved to Shinbashi, Minato-ku, Tokyo.
Year 30 of Heisei (2018): Koyou Rentia Co., Ltd. changed its name to Koyou Rentia Co., Ltd.
Year 2 of Reiwa (2020): Listed on the Tokyo Stock Exchange.
Listed on the Tokyo Stock Exchange
Year 3 of Reiwa (2021): Koyou Bussan Co., Ltd. became a group company.
Kyowa Tushin Co., Ltd. becomes a group company.
Year 4 of Reiwa (2022): GBS Co., Ltd., GBS Systems Co., Ltd., and Kind Business Co., Ltd. became group companies.
GBS Co., Ltd. GBS SYSTEMS Co., Ltd. and KIND BUSINESS Co., Ltd. : become group companies.
Year 5 of Reiwa (2023): Delivered equipment for the G7 Hiroshima Summit; reorganized Kind Business Co., Ltd., GBS Co., Ltd., and GBS Systems Co., Ltd., and changed the name to Innotex Business Solutions Co., Ltd.
Delivered equipment to the G7 Hiroshima Summit : GBS Co., Ltd., GBS SYSTEMS Co., Ltd. and KIND BUSINESS Co., Ltd. were reorganized and combined as Innotex Business Solutions Co., Ltd.
Year 6 of Reiwa (2024): Koyou Bussan Co., Ltd. changed its name to Innotex Engineering Co., Ltd.; OST Co., Ltd. became a group company.
Kyowa Tushin Co., Ltd. changed its name to Innotex Engineering Co., Ltd. : OST Co., Ltd. becomes a group company.
Executive Manager Toshiyuki Takano of Inotex Engineering Co., Ltd. will give a lecture on 'Energy Conservation Starting with Visibility' at the 'Shizuoka Energy Conservation Forum 2026' held on Tuesday, November 17, 2026. The talk will last about 30 minutes and will introduce the company's experience and achievements in its energy solutions business.
Koyurentia Co., Ltd. will add attendance management content integrated with L is B Corp's business chat "direct" to its cloud-based signage service "Worker's TV" for construction sites, starting delivery in November 2026. This will streamline the tracking of employees who move between sites and offices and improve information sharing in the construction industry.
Koyure Tenia Co., Ltd. has released a making video for the currently airing Radio CM 8th "What Moves Me, Such Words" Mid-Region version. The video introduces behind‑the‑scenes scenes, employees' thoughts, and future determination. It can be viewed on YouTube and the company website.
Our executive officer Junichi Kawamura was interviewed by the Japan Dental Newspaper Company, and the content was published in the November issue of the hospital management and general information magazine "Apollo 21". It appears on pages 38-41 in the "Message from other industries" section.
Koyurentia applied for and was selected for the Ministry of the Environment and Ministry of Land, Infrastructure, Transport and Tourism's joint project, the Sustainable Warehouse Model Promotion Project. The company is advancing the installation of solar panels on logistics warehouses, and currently can generate up to a total of 180 kW. It aims to have 100% of the electricity used in its business activities come from renewable energy by 2030.
The Office Solution Sales Department of Coyote Enterprise Co., Ltd. and its dedicated warehouse relocated to new locations in Shinbashi and Konan on October 1, 2026. The telephone number of the former Shinbashi office will continue to be used. The Office Solution Sales Group 2 (Rista Konan) also moved on the same day.
Cohen Rentia has joined note's 'IR Note Magazine' to expand its connection with investors. This allows us to deliver IR information to a broader range of investors.
Koyu Rentia Co., Ltd. will air a new radio commercial this fall titled 'Words That Move Me.' It conveys employees' values and their approach to customers, and will be broadcast every Friday on TOKYO FM.
Ko-yu Rentia Co., Ltd. has launched an official account on note. The company plans to share a range of information, including its business activities and employee initiatives.
Koyu Rentia Co., Ltd. will suspend delivery services on specific dates due to the complete renovation of its Kanto Area Center. Deliveries will not be available on September 20, 23, and 27. The company apologizes for the inconvenience and asks for customers' understanding.