Tohoku Pole Co., Ltd.

Founded with a capital of 2 million yen in Shirokawa City, Fukushima Prefecture, by the first president, Hoshisho Shichi.

Tohoku Electric Power Co., Ltd. participated in capital, and the fourth capital increase raised the capital to 30 million yen.

The Shirokawa No.1 Factory became a factory authorized to display Japanese Industrial Standards for concrete poles and RC piles.

Entered a technical partnership with Nippon Concrete Industry Co., Ltd.

The headquarters moved from Shibukawa City to Sendai City.

The Shibukawa Second Factory was completed, and production of NCS-PC piles began.

The Shibukawa Second Factory became a factory authorized to display Japanese Industrial Standards for PC piles and RC piles.

In conjunction with the establishment of Tohoku Pole Products Sales Co., Ltd., a contract was made with the company for general sale of piles.

Obtained a permit for a specified construction business under the Construction Business Act.

The Shibukawa Factory Second Production Site became a factory authorized to display Japanese Industrial Standards for PHC (ONA/Hi-ONA) piles.

The Kitakami Factory became a factory displaying Japanese Industrial Standards for PHC (ONA/Hi-ONA) piles.

Obtained the license to implement the wave-dissipating block patent from France's Sogrea.

Obtained the Minister of Construction's certification for the Rodelox method.

The Shibukawa Factory Second Production Site received evaluation from the Japan Building Center for manufacturing HiDuc-ONA piles.

The Shibukawa Factory Second Production Site received evaluation from the Japan Building Center for manufacturing large-diameter NC-ONA piles and large-diameter NC-HiONA piles.

Received evaluation from the Concrete Pile Construction Technology Association for manufacturing NCS-STB piles.

The Kitakami Factory received evaluation from the Japan Building Center for manufacturing large-diameter NC-ONA piles and large-diameter NC-HiONA piles.

Received evaluation from the Japan Building Center for manufacturing large-diameter NC and STB piles.

The Kitakami Factory received evaluation from the Japan Building Center for manufacturing HiDuc-ONA piles.

Received evaluation from the Japan Building Center for manufacturing Hi-SC piles.

Received evaluation from the Japan Building Center for manufacturing large-diameter Hi-SC piles.

Received evaluation from the Japan Building Center for manufacturing large-diameter HiDuc-ONA piles.

Obtained the Minister of Construction's certification for non-welded joint piles (T.P. joint).

Obtained Minister of Construction certification for the Copita-type HiDuc-CPRC pile.

Obtained ISO 9001 certification. The registration scope includes design, manufacturing, and sales of concrete poles and concrete piles.

Continued registration through a 3-year ISO 9001 renewal audit.

Received evaluation from the Japan Construction Center for the manufacturing of ONA105, ST105, and HB105 piles.

Received evaluation from the Japan Construction Center for the manufacturing of SC-ONA105, Hi-SC105, and large-diameter HiDuc-CPRC piles.

Obtained Minister of Land, Infrastructure, Transport and Tourism certification for the HiBEM (H·B·M) method.

Signed a contract with Japan Concrete Industry Co., Ltd. and the Hyper-NAKS construction specification company.

Registered a patent for the concrete column head cap.

Signed a permit agreement with Kajima Corporation for the implementation of the capping pile method.

Registered a resin neck patent (shape).

Signed a contract with GeoTop Inc. and the EX-MEGATOP method approval implementation company.

Signed a permit agreement with Kajima Corporation for the implementation of the Ten-Cap pile method.

Signed a contract with Japan Concrete Industry Co., Ltd., Japan Pile Co., Ltd., and the Hyper-MEGA method approval implementation company.

Obtained the new JIS mark certification.

Received evaluation from the Japan Construction Center for the manufacturing of CPRC105 piles.

Obtained JIS certification for SC piles.

Received evaluation from the Japan Construction Center for the manufacturing of non-welded joints (pairing joints).

Signed a contract with Japan Concrete Industry Co., Ltd. and the Hyper-Straight method approval construction company.

Signed a permit agreement with Taisei Corporation for the implementation of the F.T.Pile construction method.

Signed a permit agreement with Japan Concrete Industry Co., Ltd. for the production and sale of Cap-On-Pole (COP).

Becomes part of the Japan Concrete Industry Group. (July 30, 2021)

Start of concrete pole deterioration diagnosis business.

Start of production of fully standardized segmented columns.