ISO 9001 certification obtained! We provide reliable products with high customer satisfaction.
Marujo Manufacturing Co., Ltd. continues to explore spring creation as we move into the next century. Our reliable and proven coil springs are used in various applications, and our sophisticated cutting technology is attracting attention in the steel and spring industries. At our company, which aims for thorough quality control, we obtained certification for our Quality Management System "ISO9001" in 2005 as part of our efforts to further improve quality and meet customer demands. 【Manufactured Products】 ■ Various types of coil springs ■ Wire springs ■ Disc springs ■ Flat springs ■ Cylindrical springs, etc. *For more details, please download the PDF or feel free to contact us.
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【Other Manufactured Items】 ■ Various types of spring plates for rail fastening ■ Round bar steel peeling processing ■ Lock nut washers, etc. *For more details, please download the PDF or feel free to contact us.
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【Examples of Achievements】 ■ Springs for railway vehicles ■ Springs for construction machinery ■ Springs for ships *For more details, please download the PDF or feel free to contact us.
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Marujou Manufacturing Co., Ltd. has been steadfastly committed to the manufacturing industry since its founding, particularly focusing on "springs" since the post-war period. This dedication has taken various forms and continues to thrive in a variety of scenes today. Our unique technological capabilities and creativity, which look toward the next generation, are constantly building a new era and attracting attention from the spring industry.