High Frequency Thermal Processing Co., Ltd.

Separated from Japan High-Frequency Heavy Industries Co., Ltd., established High Frequency Thermal Processing Co., Ltd., and started manufacturing high-frequency quenching equipment and surface quenching contract work for various machine parts at Tamagawa Factory

Established on May 15, 1946 (Showa 21)

Established: May 15, 1946 (Current company name)

Established Kyoto Factory (now closed) within the Applied Science Research Institute Foundation, and started high-frequency quenching contract work

Received Ministry of International Trade and Industry subsidy for research on induction heating devices using saturated reactors

Received a Ministry of International Trade and Industry subsidy for research on induction heating devices using saturated reactors

Received Ministry of International Trade and Industry subsidy for research on PC steel bars

Received Ministry of International Trade and Industry subsidy for research on surface sub-hot rolling of ultra-high tensile steel

Received a Ministry of International Trade and Industry subsidy for research on low-carbon high-strength steel bars

Received Ministry of International Trade and Industry subsidy for research on surface sub-hot rolling of ultra-high tensile steel

Established Hiratsuka Factory (current: Product Business Division, Manufacturing Department, Hiratsuka Factory)

Developed and started sales of special-shaped PC steel bar 'Urbond' for quenching products

Developed and started sales of shaped PC steel bars for CPC Hume pipes

Established Kariya Factory and Akaho Factory

Newly established Kariya Factory

Newly established Akō Factory

Established Netsuren Hirakata Co., Ltd.

Established a joint venture in Korea, Koryo Thermal Processing Co., Ltd.

Developed and started sales of PC steel bars for box culverts

Started sales of hoop reinforcement and flexible reinforcement (high-strength shear reinforcement Urbon 1275)

Developed and started selling bonded PC steel bars

Development and commercialization of high-frequency heat-treated spring steel wire

Established Nagoya Factory

Established Netsuren Minami Co., Ltd.

Established Netsuren Kofu Co., Ltd. (now Netsuren Heat Treat Co., Ltd.)

Obtained general certification for Urbon Spiral Hoop Reinforcement (Ministry of Construction East Japan Office No. 51)

Established Netsuren Komatsu Co., Ltd.

Established a joint venture in Korea, Korea Heat Treat Co., Ltd.

Signed a technology licensing agreement with U.S. Piller Corporation (Transistor Inverter)

Established Hiratsuka Factory (now IH Business Division Electrical Equipment Department Hiratsuka Factory)

Established Netsuren Kofu (now Netsuren Heat Treat Co., Ltd.) Yamagata Factory and Iwaki Factory

Newly established Iwaki Factory

Newly established Netsuren Kofu (currently Netsuren Heat Treatment Co., Ltd.) Yamagata Factory

Established Nagoya Factory

Signed a technology transfer agreement with MUHR UND BENDER

Signed a manufacturing technology licensing agreement with Suzuki Metal Industries Co., Ltd. (currently Nittetsu SG Wire Co., Ltd.)

Established a joint venture in Indonesia, PT. NETUREN INDONESIA

Signed a manufacturing technology licensing agreement with MUHR UND BENDER

Participated in capital in Hokuriku United Forging Industry (now PT Komatsu Undercarriage Indonesia) in Indonesia

Signed a technology transfer agreement with MUBEA

Changed corporate name to "Netsuren"

The designation is changed to 'Netsuren'

Established NETUREN USA, INC. in the United States

Established Netsuren Himek Co., Ltd.

Signed a technology transfer agreement with Taiwan Hesun Enterprise Co., Ltd. (Transistor Inverter)

Signed a technology transfer agreement with Piller Inc. in the United States (Transistor Inverter)

Established a joint venture in the United States, NETUREN AMERICA CORPORATION

Newly established Netsuren Heat Treatment Gifu Factory and Niigata Factory

Relocated headquarters (Oval Court Osaki West, Higashi-Gotanda, Shinagawa-ku, Tokyo)

Started sales of hollow rack bars

Established a joint venture company Shanghai Zhonglian Wire Co., Ltd. in China (Shanghai)

Newly established Okoyama Factory

Established a joint venture company Shian High-Frequency Heat Treatment Co., Ltd. (consolidated subsidiary) in China (Jiangsu Province)

Relocated headquarters to Shinagawa-ku, Tokyo, at Oval Court Osaki Mark West

Established a joint venture company Guangzhou Fengtong Heat Treatment Co., Ltd. (consolidated subsidiary) in China (Guangdong Province)

Newly established Kobe Factory

Started sales of rotary wheels

Established a subsidiary High-Frequency Heat Treatment (China) Bearing Co., Ltd. in China (Shandong Province)

Iwaki Factory and Akō Factory received certification as excellent welding shear reinforcement manufacturing companies. Certification number: JRJI-優補-008-009

Established a specific subsidiary Neturen Czech s.r.o. in the Czech Republic

Established a joint venture PT. NETUREN INDONESIA in Indonesia

Participated financially in Tianjin Fengdong Heat Treatment Co., Ltd. in Tianjin, China

Newly established Ibaraki Factory

Established NETUREN MEXICO, S.A. de C.V. in Mexico

Newly established Kani NH Factory

Newly established Human Resource Development Center

Established a branch office of Shanghai Zhonglian Wire Co., Ltd. in Chongqing, China

Transitioned from the First Section of the Tokyo Stock Exchange to the Prime Market due to review of market classification

Made a consolidated subsidiary through acquisition of Doken Co., Ltd.

Made a consolidated subsidiary through acquisition of MDI Co., Ltd.