- CEO
- Kazuhiro Toshimitsu
- Full Time Employees
- 815
- Sector
- Producer manufacturing
- Industry
- Metal fabrication
- Address
- Kogin Building Osaka OS Japan 541-0043
- IPO Date
- Mar 1, 1962
- Business
- Nippon Seisen Co., Ltd. manufactures and sells stainless steel wires, metal fibers, and related filters in Japan and internationally. The company produces NAS stainless steel wires for springs, micro wires, cold heading wires, shaped wires, welding wires, and high-strength wires including TouPH Stainless, HYBREM-S for hydrogen embrittlement resistance, and ELEMETAL high-strength copper-alloy wire; NASLON metal fibers for filters and composites; metal filters such as NAS clean gas filters for semiconductors; and additional products like screws, welding rods, nickel-titanium shape memory alloy wires, and beta-titanium ultra-thin wires for golf shafts. It operates primarily from its Hirakata headquarters and factory in Osaka Prefecture, Japan, founded in 1951 as Sanshin Special Wire Manufacturing Company and renamed in 1956, with subsidiaries including Thai Seisen Co., Ltd. in Thailand, Naslon Fuji Filter (Changshu) Co., Ltd. in China, NASLON Korea Co., Ltd. in South Korea, and Nissei Techno Co., Ltd. in Japan; the company functions as a subsidiary of Daido Steel Co., Ltd. Recent developments include the completion of a new product warehouse at the Hirakata Factory in March 2021, installation of a full automated salt pickling bath at the Higashi-Osaka Factory in March 2020, transition to the Prime Market of the Tokyo Stock Exchange in April 2022, and release of consolidated financial results for the fiscal year ended March 31, 2025 in 2025, alongside ongoing investments in production facilities for high-function materials targeting semiconductors, 5G, IoT, automotive, medical, and renewable energy sectors.