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Business overview
The Group is a corporate group centered on 株式会社三ツ星 (securities code 5820; filing date: 22 June 2026) and comprising 5 subsidiaries. Its principal activities are the manufacture and sale of rubber-insulated electric wires, plastic-insulated electric wires, synthetic resin profile extrusions and related products, and electric heating wires and strips, among other products. Its main product lines are divided into the Electric Wire, Polymertech, and Electric Heating Wire businesses, each of which includes the following product groups. The Electric Wire business mainly handles natural-rubber cabtyre cables, synthetic-rubber cabtyre cables, cross-linked polyethylene cables, welding cables, control cables, plastic cabtyre cables, and plastic cords. The Polymertech business mainly handles plastic extruded products, injection-molded products, vacuum-formed products, high-performance tubes, and LED-related products. The Electric Heating Wire business mainly handles electric heating wires and strips. A business structure diagram is provided. Over the medium to long term, the Group aims to achieve sustainable growth with ESG at its core and is promoting the New 4S initiative, which focuses on developing new fields, creating new products, strengthening its base of new customers, and advancing a new global strategy. The new medium-term management plan was formulated for the fiscal years ending March 2024 through March 2026 and sets out initiatives aimed at sustainable growth from the fiscal year ending March 2027 onward.
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