Koyo Sangyo to build new gas appliance valve plant in Joetsu, Niigata

Gas appliance maker Koyo Sangyo is building a new factory in Joetsu, Niigata, to expand gas appliance production capacity, with about ¥3.2 billion invested. Completion is planned for October 2025 and full operation from spring 2026.

“建築費と設備費で約３２億円を投資する。”niigata-nippo.co.jp

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• niigata-nippo.co.jp製造集約で生産能力拡大、ガス器具製造の光陽産業が新潟県上越市に新工場 人材確保へ働きやすい環境整備 | 新潟日報Feb 25, 2025

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