- Business
- J-MAX Co., Ltd. manufactures and sells automobile body press parts, precision press parts, and related dies and jigs in Japan and overseas markets. The company produces automotive body frameworks such as front pillar inner upper and middle panels, roof arches, center pillar outers, and side sills; safety augmentation components including front bumper beams; battery-related products comprising covers, cases, binding bars, and frames for electric and hybrid vehicles; functional parts like hood hinges, tailgate hinges, and steering hanger beams; precision components such as clutch drums, forward clutches, planetary carriers, drum sun gears, tamper springs, pulsar plates, rotor pulsars, belt pulleys, and stator holders; as well as stamping molds, welding jigs, and inspection tools. It serves major customers including Honda Motor Co., Ltd., Topre Corporation, Toyota Auto Body Co., Ltd., Aisin Corporation, and Panasonic Corporation Automotive & Industrial Systems Company.
Founded in 1952 and headquartered in Ogaki City, Gifu Prefecture, Japan, J-MAX operates through segments in Japan, Thailand, Guangzhou, and Wuhan, with four overseas first-tier subsidiaries and one joint venture supporting production in Asia. Subsidiaries include Thai-Marujun Co., Ltd. in Thailand, Guangzhou Marujun Co., Ltd. and Wuhan Marujun Co., Ltd. in China, and Fujian Marujun New Technology Co., Ltd. in China. The company lists on the Second Sections of the Tokyo Stock Exchange and Nagoya Stock Exchange under ticker 3422.
In July 2022, the company rebranded from MARUJUN Co., Ltd. to J-MAX Co., Ltd. to reflect its expanded business scope and strategic direction. It continues to invest in production capacity, including expansion at the Kamiishizu Plant with advanced transfer presses for high-tensile steel processing, and relocated its Technical Center (formerly Tochigi R&D Center) to Haga Town, Tochigi Prefecture in July 2024 to enhance research and development operations. As of March 2025, J-MAX employs 296 people directly and 1,268 across consolidated entities, maintaining its focus on automotive supply chains amid stable revenue aligned with industry growth.