{
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  "endpoint": "financials-longterm",
  "stock_code": "1950",
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  "api_url": "/api/1950/financials-longterm.json",
  "updated": "2026-08-17",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/1950/financials/",
  "source": {
    "primary": [
      "有価証券報告書"
    ],
    "extraction": "EDINET の XBRL、kabupro 掲載の旧有価証券報告書、会社年鑑・社史等からの転記",
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    "caveat": "創業期から現在までを 1 本に繋いだ長期系列のため、年代により出所・単位・連結範囲が変わる。行ごとの reference / unit / consolidation を必ず参照すること"
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      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": null,
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    },
    {
      "year": 1992,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "employees": null,
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    },
    {
      "year": 1993,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
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    },
    {
      "year": 1994,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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    },
    {
      "year": 1995,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
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    },
    {
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      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": null,
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    },
    {
      "year": 1997,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": null,
      "operating_profit_jp": null,
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      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1998,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
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      "operating_profit_jp": null,
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      "net_profit_jp": null,
      "net_profit": null,
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      "employees": null,
      "reference": null
    },
    {
      "year": 1999,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
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      "operating_profit_jp": null,
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      "employees": null,
      "reference": null
    },
    {
      "year": 2000,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
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      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 2001,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
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      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
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      "employees": null,
      "reference": null
    },
    {
      "year": 2002,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1580,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 33,
      "net_profit_jp": "当期純利益",
      "net_profit": 25,
      "net_margin": 1.582,
      "employees": null,
      "reference": null
    },
    {
      "year": 2003,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1462,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 28,
      "net_profit_jp": "当期純利益",
      "net_profit": 19,
      "net_margin": 1.299,
      "employees": null,
      "reference": null
    },
    {
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      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1457,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "employees": null,
      "reference": null
    },
    {
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      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "net_profit_jp": "当期純利益",
      "net_profit": 26,
      "net_margin": 1.825,
      "employees": null,
      "reference": null
    },
    {
      "year": 2006,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1389,
      "operating_profit_jp": "営業利益",
      "operating_profit": 44,
      "ordinary_profit_jp": "経常利益",
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      "net_profit_jp": "当期純利益",
      "net_profit": 27,
      "net_margin": 1.943,
      "employees": null,
      "reference": null
    },
    {
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      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": 1430,
      "operating_profit_jp": "営業利益",
      "operating_profit": 61,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 68,
      "net_profit_jp": "当期純利益",
      "net_profit": 36,
      "net_margin": 2.517,
      "employees": null,
      "reference": null
    },
    {
      "year": 2008,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1543,
      "operating_profit_jp": "営業利益",
      "operating_profit": 77,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 86,
      "net_profit_jp": "当期純利益",
      "net_profit": 46,
      "net_margin": 2.981,
      "employees": null,
      "reference": null
    },
    {
      "year": 2009,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1568,
      "operating_profit_jp": "営業利益",
      "operating_profit": 90,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 100,
      "net_profit_jp": "当期純利益",
      "net_profit": 54,
      "net_margin": 3.443,
      "employees": null,
      "reference": null
    },
    {
      "year": 2010,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1553,
      "operating_profit_jp": "営業利益",
      "operating_profit": 109,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 119,
      "net_profit_jp": "当期純利益",
      "net_profit": 63,
      "net_margin": 4.056,
      "employees": null,
      "reference": null
    },
    {
      "year": 2011,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1537,
      "operating_profit_jp": "営業利益",
      "operating_profit": 108,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 117,
      "net_profit_jp": "当期純利益",
      "net_profit": 62,
      "net_margin": 4.033,
      "employees": null,
      "reference": null
    },
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      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1509,
      "operating_profit_jp": "営業利益",
      "operating_profit": 97,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 106,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 47,
      "net_margin": 3.114,
      "employees": null,
      "reference": null
    },
    {
      "year": 2013,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1625,
      "operating_profit_jp": "営業利益",
      "operating_profit": 109,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 116,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 63,
      "net_margin": 3.876,
      "employees": null,
      "reference": null
    },
    {
      "year": 2014,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1702,
      "operating_profit_jp": "営業利益",
      "operating_profit": 112,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 121,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 67,
      "net_margin": 3.936,
      "employees": null,
      "reference": null
    },
    {
      "year": 2015,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1744,
      "operating_profit_jp": "営業利益",
      "operating_profit": 138,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 150,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 86,
      "net_margin": 4.931,
      "employees": null,
      "reference": null
    },
    {
      "year": 2016,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1742,
      "operating_profit_jp": "営業利益",
      "operating_profit": 143,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 154,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 95,
      "net_margin": 5.453,
      "employees": null,
      "reference": null
    },
    {
      "year": 2017,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1722,
      "operating_profit_jp": "営業利益",
      "operating_profit": 138,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 147,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 91,
      "net_margin": 5.284,
      "employees": null,
      "reference": null
    },
    {
      "year": 2018,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
      "sales": 1789,
      "operating_profit_jp": "営業利益",
      "operating_profit": 149,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 167,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 108,
      "net_margin": 6.036,
      "employees": null,
      "reference": null
    },
    {
      "year": 2019,
      "month": 3,
      "company_name": "日本電設工業",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "完成工事高",
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      "net_profit": 98,
      "net_margin": 5.369,
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      "reference": null
    },
    {
      "year": 2020,
      "month": 3,
      "company_name": "日本電設工業",
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      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "net_profit": 113,
      "net_margin": 5.701,
      "employees": null,
      "reference": null
    },
    {
      "year": 2021,
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      "company_name": "日本電設工業",
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      "accounting_standard": "JGAAP",
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      "ordinary_profit": 154,
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      "net_profit": 95,
      "net_margin": 4.854,
      "employees": null,
      "reference": null
    },
    {
      "year": 2022,
      "month": 3,
      "company_name": "日本電設工業",
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      "accounting_standard": "JGAAP",
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      "sales": 1736,
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      "net_profit": 52,
      "net_margin": 2.995,
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      "reference": null
    },
    {
      "year": 2023,
      "month": 3,
      "company_name": "日本電設工業",
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      "accounting_standard": "JGAAP",
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      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 72,
      "net_margin": 4.183,
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    },
    {
      "year": 2024,
      "month": 3,
      "company_name": "日本電設工業",
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      "accounting_standard": "JGAAP",
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      "operating_profit": 134,
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      "net_profit": 100,
      "net_margin": 5.154,
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      "reference": null
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      "year": 2025,
      "month": 3,
      "company_name": "日本電設工業",
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      "accounting_standard": "JGAAP",
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    {
      "year": 2026,
      "month": 3,
      "company_name": "日本電設工業",
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  ]
}
