| Company name | Group | Parent | Subsidiary | Customer | Supplier | Alliance | Bank | Shareholder |
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| CAINZ VIETNAM COMPANY LIMITED | ||||||||
| カインズテクノロジーズ | ||||||||
| Cainz Business Service | ||||||||
| カインズベストケア | ||||||||
| カインズポップデポ | ||||||||
| ベイシアオープス | ||||||||
| ベイシアグループ | ||||||||
| Beisia Insurance Service | ||||||||
| ベイシアポップデポ | ||||||||
| ベイシアリース・キャピタル | ||||||||
| ベイシア土地建物 | ||||||||
| ベイシア興産 | ||||||||
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Establishment of Iseya
Opening of Home Center No.1 (Tochigi Store)
Establishment of Tokyo Information Center
Operation of Yaita Distribution Center
Operation of Isesaki Distribution Center
Establishment of Cainz Co., Ltd. (spun off and independent from Iseya Co., Ltd.)
Established in 1989. Operating in 29 prefectures, with the brand concept 'Kurashi DIY', developing valuable products and services that enrich daily life, and offering them at affordable prices every day.
Establishment of Takasaki Headquarters
Establishment of Distribution Technology Research Institute
Opening of Super Home Center No.1 (Isesaki Store)
Achievement of 100 stores
Sales exceeded 100 billion yen
Completion of the comprehensive training center "Karuizawa Club"
Establishment of Cainz Best Care
Appointment of new chairman and new president
Establishment of Cainz Food Service
Establishment of Tokai Center
Establishment of Cainz Beisia Nagano Distribution Center
Establishment of Togane Distribution Center
Achieved sales of 200 billion yen
Cainz Mall No.1 Store (Hamamatsu Tsuda Techno) Opened
Nagoya Distribution Center Operational
Started sponsorship of Thespa Kusatsu (now Thespa Gunma)
Expanded store opening areas to 20 prefectures and cities
Launched Shanghai Office
Launched Online Shop
Established Cainz General Insurance Service
SPA Declaration
Fujieda Distribution Center and Kawagoe Distribution Center Operational
Surpassed sales of 300 billion yen
First store in Hokkaido (FC Omagari Store)
50th Anniversary of Baysia Group Founding
20th Anniversary of Establishment
Shanghai Distribution Center, Qingdao Distribution Center, and Shenzhen Distribution Center Operational
Kobe Distribution Center Operational
Established local subsidiary in China "Jiaying Zhi Shang Mao You Xian Gong Si"
Shanghai Logistics Center Operational
First Okinawa store (FC Sun Plaza Itoman Store)
Shinya Itate Distribution Center Operational
Ota Overseas Product Dedicated Center Operational
Shenzhen Logistics Center Operational
Honjo Waseda Headquarters Opened (Relocated from Takasaki Headquarters)
Sapporo Distribution Center Operational
Cainz Food Service CAFE BRICCO First Store Opening
Changed Corporate Identity (CI)
Tax-Free Shopping Support Started at 18 Stores
Cainz Business Service Certified as a Special Subsidiary
Surpassed 200 Stores
Certified as a Saitama Prefecture Excellent Employment Agency for People with Disabilities
Maebashi Materials Dedicated Center Operational
First Store in Kyushu (Fukuoka Shingu Store)
Sales Surpassed 400 Billion Yen
First Store in Hiroshima (Hiroshima LECT Store)
Ho Chi Minh Office Opened and Ho Chi Minh Distribution Center Operational
Launched Online Shop on Chinese E-Commerce Site T-MALL
Entered Business Capital Alliance with Daito Corporation
Opened Urban-Style New Store
Cain's Design Exhibition (currently Atelier Cain's) begins
Kumimachi Mall Store No. 1 Opens (Maebashi Kojimada Store)
Fukuoka Distribution Center and Atsugi Distribution Center operational
Atsugi Distribution Center opening
30th anniversary
New Chairman and New President appointment
AEO Special Importer Certification
Bayasia Group 60th Anniversary
First award for Excellent Product Safety Measures Company
Cainz Innovation Hub opened in Omotesando (now closed)
Pet media "WanQol" launched
Deployment of "CAINZ PickUp" at all stores
Owned media "Tonari no Cainz-san" launched
First store of member-only construction professional shop "C'z PRO" opened (Tomei Yokohama store)
Participated in capital management of Thespa Kusatsu Gunma (now Thespa Gunma) and started Thespa Co-Creation Project
Signed capital and business alliance agreement with unerry
Formulated "Kumimachi Concept"
Formulated goal to achieve carbon neutrality by 2050
"Tonari no Cainz-san" won the Grand Prix in the Impact Content Division at the Content Marketing Grand Prix 2021
Signed capital and business alliance agreement with First Group
Concluded basic agreement with Maebashi City on corporate hometown tax for Thespa training facilities, and later re-concluded comprehensive partnership agreement including Thespa Kusatsu Gunma (now Thespa Gunma)
Tokyu Hands (now Hands) joined Cainz Group
AutoAlls joins Cainz Group
Signs a capital and business alliance agreement with Kayac
First CO2-free store Mibu opens
Honjo City, Tokyo Electric Power Company Power Grid sign a cooperation agreement for promoting co-creation toward realizing a zero-carbon city
Received the Gold Award in the Well-being (Safety and Health) category at the 4th Reiwa SAFE Award hosted by the Ministry of Health, Labour and Welfare for KYT activities
Cainz Hands Shinjuku store opens on the 8th floor of Hands Shinjuku
Announces eight product brands
Receives a letter of appreciation from the Minister of Health, Labour and Welfare for long-term blood donation activities and promotion activities
First store in Wakayama Prefecture (Kii-Kawabe store)
Sales surpass 500 billion yen
Full-scale operation of Kuwana Distribution Center begins
Donates Maebashi City Rose Town Soccer Field (nickname: Zaspark) to Maebashi City
Cainz's first smartphone payment service 'CAINZ Pay' launches
Receives the Special Award for the Earth and Humanity Compassion Award at the 12th Good Life Award hosted by the Ministry of the Environment
Signs a partnership with the Ministry of the Environment to promote the adoption of rescue dogs and rescue cats
Becomes the sole top shareholder by subscribing to a third-party allotment of shares in Zaspaku Gunma
Full-scale operation of 'Cainz Kuwana Distribution Center' begins, aiming for sustainable logistics to address the 2024 problem
Full-scale operation of Hidaka Distribution Center begins
Launches pet membership system 'Pet's One Members'
'WanQol' wins the Grand Prix in the specialized content category at the Content Marketing Grand Prix 2024
Baysia and Cainz have subscribed to Zaspa's third-party allotment of shares, and Zaspa has joined the Baysia Group
The online community 'CAINZ DIY Square' has surpassed 100,000 members
Signed a capital and business alliance agreement with Kōkan Dekun
Launched 'Low Price Guarantee'
The next-generation flagship store, Cainz Yoshikawa Minami Store, opens
The 'Horticultural Soil Horizontal Recycling System' received the grand prize in the agriculture, forestry and fisheries category of the Green Purchase Award
Daito joins the Cainz Group
Kainz opened a small reform specialty store within the commercial facility "Akabane Bivio" in Kita-ku, Tokyo on October 22, 2026. It is the 11th small urban store and the 7th in Tokyo, aiming to expand the touchpoint where residents can casually consult about housing issues.
To protect customers' information and service security, emergency maintenance has been conducted on CAINZ Reserve, C’z PRO, and Pet’s One since October 21, 2026. No incidents such as unauthorized access have been confirmed to date, and the resumption time is yet to be determined.
Cainz and Tohan jointly developed modular retail fixtures for bookstores that can be used in pop-up shops and other bookstore space applications. The product is sold on the order-cut furniture platform 'CAINZ DIY MARKET', with sales starting on October 21, 2026.
Kainz Co., Ltd. acquired all shares of Sonitech Co., Ltd. and integrated the company into its group. The transaction was completed on October 19, 2026, and in the future, the company will advance its business by combining its strengths in timber residential construction sub-materials with Kainz's digital know-how.
On October 15, 2026, Kainz opened the "Kainz Remodeling YourElm Aoto Store" inside the commercial facility "YourElm Aoto" in Katsushika-ku, Tokyo. It is the 10th small urban store and the 6th in Tokyo, aiming to expand touchpoints where residents can casually consult about housing issues.
Six Cainz original products received the Good Design Award for the 2026 fiscal year. The company has been working on product development aimed at solving customers' everyday challenges, and this marks its 15th consecutive award.
Kainz will be closing its live animal sales and various services such as trimming and pet hotels. The affected locations are the Tokomatsuyama Takasaka store's dog and cat live animal sales (trimming remains open) and the Gifu Kitakata store's dog, cat, bird, small animal, and fish live animal sales, trimming, and hotel. They will provide further notice once the reopening date is decided.
On October 13, 2026, Kainz signed a comprehensive cooperation agreement with Ueda City. The collaboration focuses on disaster prevention, safety and security, environmental conservation, regional industrial promotion, and support for child-rearing, the elderly, and people with disabilities, aiming to enhance citizen services and promote community development. Since opening in 1994, the Ueda store has been closely connected to the community for 32 years.
From October 7 to November 9, 2026, Kainz will hold the "Kainz Wan Festival 2026" at all Kainz stores nationwide and the official online shop. On November 1, in line with Dog Day, an event to express gratitude to dogs will be held, featuring DIY workshops and a posting campaign.
Starting from October 7 to November 9, 2026, in conjunction with the "Cain's Wan Festival 2026," a portion of the sales of dog food and supplies purchased at Cain's stores nationwide and the official online shop will be donated to the Animal Fund Public Interest Incorporated Foundation. The donation limit is set at 1.11 million yen and will be used for rescue support aimed at zero euthanasia of dogs and cats. Furthermore, Cain's continues to support rescue dogs and cats through the "Kumimachi Dog and Cat Adoption Project" and the online matching service "Shippō no Deai."