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§05
Network
NETWORK
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§06
History
38 EVENTS
Started as a machine tool dealer in Osaka
Yamazen was founded when founder Takeo Yamamoto, at 14, left his hometown of Fukui Prefecture and apprenticed at a machine tool dealer in Tatsuuri Hori, Osaka. Eight years later, at age 22, he became independent and opened 'Osaka Tool Manufacturing'.
During World War II, he received a draft notice, closed his shop, and went to Okinawa. After the war, he was detained in a prisoner-of-war camp and returned at the end of 1946.
In May 1947, Yamazen Tool Manufacturing Co., Ltd. was established. Osaka was in ruins, and the focus was on restoring daily life, starting with products like hammers and shovels.
Founded: May 30, 1947 (Showa 22)
Founded
Founder Takeo Yamamoto established 'Yamazen Tool Manufacturing Co., Ltd.'
A novel 'Doteraio' based on founder Takeo Yamamoto was published and adapted into a TV drama.
In April 1975, the 'Dotera Market' was held, initiating an exhibition and direct sales event.
In May 1952, Yamazen Tool Manufacturing Co., Ltd. was established.
Expanded into household appliances, starting sales of sinks and kerosene stoves.
Around Showa 58, developed original products such as electric carpets, kotatsu, and fans, expanding sales to home centers.
In October of Showa 37, listed on the Second Section of the Osaka Securities Exchange in the 15th year since founding.
In April of Showa 38, established a local subsidiary in Chicago, USA, taking the first step in overseas expansion.
Listed on the Second Section of the Tokyo Stock Exchange.
In Showa 41, built a solid foundation as a machinery tools specialty trading company, and began plans to list on the First Section of the Tokyo and Osaka stock markets in Showa 46.
On October 1 of Showa 37, listed on the Second Section of the Osaka Securities Exchange in the 15th year since founding.
In Showa 43, expanded into the housing equipment field.
In July of Showa 43, established the 'Bunki Department' handling cultural equipment, starting sales of sinks and kerosene stoves.
Achieved listing on the First Section of the Tokyo and Osaka stock markets in Showa 46.
In Showa 47, fully entered the construction and real estate business following the announcement of the 'Japan Archipelago Reconstruction Theory'.
In July of Showa 47, published the novel 'Doterai Otoko' modeled after founder Yamamoto Takeo, which was adapted into a TV drama.
In October of Showa 48, the TV drama 'Doterai Otoko' was broadcasted and gained popularity.
In July of Showa 49, held the 'Doterai Market' to start an exhibition and direct sales of housing equipment.
Held the 'First Doterai Market' in April of Showa 50.
During the first oil shock recession in Showa 51, faced management crisis and withdrew from the real estate business.
In 1972, expanded sales routes in the tools division, leading to entry into the household appliances field, and established the 'Household Appliances Section' in 1978 for full-scale entry.
Started 'ZEUS PLAN' in Showa 57.
In Showa 62, introduced VI (Visual Identity) and changed the company emblem.
In Heisei 4, established the 'New Management Philosophy' and 'Self-Discipline Action Guidelines'.
In 1997, the 'Yamazen Group Corporate Action Charter' was established.
In 2000, the 'CO2 Reduction Green Ball Project' was launched.
In 2005, a divisional system was introduced.
In 2010, BCP was formulated at the Osaka headquarters.
In 2015, the first trading company to obtain 'Resilience Certification'.
In 2018, Toho Industrial Co., Ltd. was made a wholly owned subsidiary.
In 2020, support for business succession of small and medium-sized enterprises was launched.
In 2022, the Purpose and Vision were established.
§07
News
25 ARTICLES
Potential Personal Information Leak Due to Unauthorized Access
An suspicious file was found on an external server used by Yamazun's corporate site and related sites. Investigation revealed that personal information may have been leaked due to unauthorized access. The company has shut down the affected sites, blocked external access, and apologized to stakeholders.
Notice of Temporary Suspension of Corporate Site and Related Sites
Yamazen Co., Ltd. discovered suspicious files on an external server, prompting the temporary suspension of its corporate site and related sites (Yamazen BASE CAMP, BCP.ERS). No data leakage has been confirmed at this time; investigations continue, and we will provide further updates as soon as results are available.
Award Ceremony for the Yoshimoto Takao Memorial Scholarship Fund Certification
Yamazen Inc. held the certification award ceremony for the Yoshimoto Takao Memorial Scholarship Fund, a public trust established in 1992, at its Osaka headquarters on November 9, 2026. Four new scholarship recipients were certified, bringing the total number of recipients to 141. The ceremony was attended by Yamazen’s management and the fund’s operating chairman.
Yamazen exhibits space‑saving automation cell at JIMTOF2026
Yamazen Co., Ltd. is exhibiting at JIMTOF2026, held at Tokyo Big Sight from October 26 to 31, 2026. The cell demonstrates end‑to‑end automation, including cutting processing, workpiece attachment/detachment and transport by collaborative robots, and inspection using a 3D coordinate measuring machine, designed for limited spaces such as small workshops.
Yamazen Launches New Accessories for Electric Height-Adjustable Desks
Yamazen Corporation will add racks and cabinets to its lineup of accessories for electric height-adjustable desks, with sales beginning in early November 2026. The company is proposing the desks as study desks that can be used as children grow; they offer stepless adjustment and reconfigurable components to suit changing needs.
Yamazen Conducts Pilot of Shared Micromobility and Autonomous Delivery Robots
Yamazen Corporation took part in a joint pilot with Takenaka Corporation testing autonomous and remote towing of shared micromobility vehicles. Conducted at the UR Morinomiya No. 2 housing complex in eastern Osaka Castle Park, the trial evaluated last-mile mobility and delivery services in residential areas. The initiative aims to address short-distance travel and baggage transport challenges in an aging society.
Yamazen Continues as Top Partner of San-en NeoPhoenix
Yamazen Corporation announced it will continue supporting the B.LEAGUE’s San-en NeoPhoenix as a top partner for the 2026–27 season. The team wore its away uniform at Game 2 of the AICHI CENTRAL CUP 2026 on September 13. San-en NeoPhoenix actively conducts community contribution activities.
Yamazen, Yazaki, and Cuebus Begin Demonstration of Linear Motor Robot Warehouse
Yamazen Co., Ltd., Yazaki Corporation, and Cuebus Inc. have begun a demonstration of the CUEBUS urban, multi-level robotic warehouse system at Innovation Hub-REN, a newly established innovation facility in Susono, Shizuoka Prefecture. The demonstration is part of an effort to develop next-generation manufacturing and automate production sites using AI and robotics.
Yamazen Launches “Foot Warmer & Cooler”
Yamazen Co., Ltd. has developed “Foot Warmer & Cooler,” an industry-first foot care appliance with three functions: warm air, cool air, and a footrest. Designed for year-round use, it helps address cold and sweaty feet, while the footrest also supports posture. Sales will begin in mid-September 2026 through Yamazen Bizcom, Kurashi no e-Shop, and home centers across Japan.
Yamazen to Exhibit at Green Cross Exhibition 2026
Yamazen Corporation’s Tools & Engineering Division will exhibit at Green Cross Exhibition 2026, to be held at Tsudome, the Sapporo Sports Exchange Facility, from September 16 to 18, 2026. Under the themes of safety measures, environmental improvement, and heatstroke prevention, the booth will offer problem-solving proposals and demonstrations of new products. The company plans to present packaged solutions that address harsh on-site conditions and support safety and productivity.
§08
Public records
GOV
National Tax Agency basic information1120001049040
Source: National Tax Agency Corporate Number Publication Site, basic three items
Trade name
株式会社山善
Trade name (kana)
ヤマゼン
Name in English
Corporation type
301
Address
〒550-0012 大阪府大阪市西区立売堀2丁目3番16号
Postal code
5500012
Prefecture code
27
City code
106
Address outside Japan
Prefecture in English
City in English
Address outside Japan in English
Corporate number assignment date
2015-10-05
Update date
2018-04-03
Change date
2015-10-05
Registry closure date
Reason for registry closure
Successor corporate number
Details of the change
Latest record
1
Excluded from search
0
Processing type
01
Correction type
1
Trade name image ID
Address image ID
Sequence number
3986796
METI gBizINFO1120001049040
Source: gBizINFO (Ministry of Economy, Trade and Industry)