Santelefon Co., Ltd.

Established Yamashina Co., Ltd. in Osaka City as a wholesale business of communication equipment.

Commenced trading business.

Opened a branch office in Hiroshima. Subsequently expanded the nationwide sales network to Nagoya, Fukuoka, Sapporo, Tokyo, Takamatsu, Matsuyama, Sendai, Naha, and Kanazawa.

Publicly listed shares. Registered with the Osaka Securities Association.

Moved headquarters and warehouse to a newly built facility in Tsushima-ku, Osaka City.

Changed the company name to Santelefon Co., Ltd. to enhance corporate image.

Listed on the Second Section of the Osaka Stock Exchange.

Reorganized into a dual-headquarters system with Osaka and Tokyo headquarters.

Launched nationwide chain of telephone specialty shop "World's Telephones & Telephone House".

Obtained model certification from Nippon Telegraph and Telephone Public Corporation for two self-developed multifunction telephone models, RUNRU20 and Benri-Hon 60.

Established the Telephone House Division at the Tokyo headquarters to support the nationwide chain expansion of "World's Telephones & Telephone House".

Opened a product management center in Koshigaya City, Saitama Prefecture as a nationwide distribution hub.

Listed on the First Section of the Osaka Stock Exchange.

Listed on the First Section of the Tokyo Stock Exchange.

Integrated and relocated headquarters functions to Tokyo.

Established Santele Trading Co., Ltd. as a subsidiary for overseas business.

Delisted from the Tokyo and Osaka Stock Exchanges to achieve medium- to long-term sustainable growth.

Established the Business Development Department under the Structural Reform Promotion Headquarters and commenced overseas expansion into China and the ASEAN region.

Relocated headquarters from Ningyocho, Chuo-ku, Tokyo to Hatchobori.

Moved the "Product Management Center" to Katsushika-ku, Tokyo, and strengthened logistics as the "Headquarters Logistics Center".

Moved the Kansai Sales Division to Yodoyabashi and established the "West Japan Logistics Center", a logistics hub for western Japan.

The shareholder "JBP-I" acquired 100% of the company's shares through "Nitto Kogyo Co., Ltd.", making it part of the Nitto Kogyo Group.

Relocated the logistics center from Katsushika-ku, Tokyo to Itabashi-ku, Tokyo.

Relocated the logistics center from Itabashi-ku, Tokyo to Ota-ku, Tokyo.

Obtained general construction permit for electrical contracting.

Established "SUNTEL (THAILAND) CO., Ltd." as a subsidiary to pursue overseas business.

Obtained ISO/IEC 27001:2013 and JIS Q 27001:2014 (ISMS) certification company-wide.

Relocated headquarters from Hatchobori, Chuo-ku, Tokyo to the current location in Nihonbashi.

Expanded overseas business by establishing "SAO NAM AN TRADING SERVICE Corp. (SOECO)" as a subsidiary in Vietnam.

Expanded overseas business by establishing "Master Controls Co., Ltd." as a subsidiary in Thailand.