In 1940, Yaichi Sekine founded Sekine Shoten, launching the sale of agricultural materials after branching out from Sekine Bennosuke Shoten (now Fukaya Warehouse), a business rooted in the legacy of Eiichi Shibusawa, a native of Fukaya City.

In 1961, the company was reorganized as Sekine Manufacturing Co., Ltd., with Kounosuke Sekine appointed as its first Representative Director and President.
That same year, the company completed Japan’s first steel-framed pig house, which gained widespread acclaim as a facility that enabled large-scale pig farming and quickly became a game-changer in the industry.

In 1969, Sekine Steel Co., Ltd. was established as the company’s steel frame manufacturing division.
This facility is now known as the Fukaya Factory.

In 1970, the company began manufacturing the “V-Pit Cleaner,” a machine designed to separate manure and urine.
That same year, we also started importing equipment and materials for pig farming from overseas manufacturers.

In 1973, Sekine Corporation was established.
Widely known by the phrase, “Wherever there are pig farmers, there is Sekine,” the company earned a dominant market share as a pioneering manufacturer in the swine industry.

In 1975, the Sapporo Office was established (now the Sapporo Sales Office).
That same year, the Morioka Sales Office was founded as Tohoku Sekine Co., Ltd. (now the Tohoku Branch), and Kyushu Sekine Co., Ltd. was established in Kobayashi City, Miyazaki Prefecture (now the Kyushu Branch).

In 1981, the company began constructing apartments and condominiums.
That same year, we also became the first in Japan to handle the “Ceramic House” developed by Misawa Homes.

In 1984, the company launched a new business selling telecommunications equipment, including imported telephones and facsimile machines.
That same year, a showroom was opened in Akasaka, Tokyo.

In 1989, the company began manufacturing and selling the “Pre-Parking” multi-level parking system.

In 2002, Hiroyuki Sekine, the second-generation successor, was appointed as Representative Director and President.

In 2013, the company launched a solar power generation business, selling electricity produced from renewable energy.
We now operate 15 solar power plants across Japan.

In 2017, the company launched a biogas power generation business.
We currently operate three biogas plants in Saitama Prefecture.

In 2023, Masato Shinozaki, the third-generation successor, was appointed as Representative Director and President.