{
  "spec_version": "3",
  "endpoint": "timeline",
  "stock_code": "7822",
  "company_name": "永大産業",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/7822/",
  "api_url": "/api/7822/timeline.json",
  "updated": "2026-08-23",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/7822/",
  "source": {
    "primary": [
      "有価証券報告書「沿革」",
      "有価証券報告書",
      "公式サイト「沿革」"
    ],
    "extraction": "有価証券報告書の沿革を基礎に、社史・報道で補完",
    "row_field": "source"
  },
  "timeline": [
    {
      "date": "1946/7",
      "importance": 3,
      "event": "大阪市大正区に設立し合板の製造・販売を開始",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1952/11",
      "importance": 1,
      "event": "販売会社の永大ベニヤを設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1956",
      "importance": 1,
      "event": "フローリング工場を設置",
      "source": "公式サイト「沿革」"
    },
    {
      "date": "1962/12",
      "importance": 1,
      "event": "大阪証券取引所市場第二部に株式を上場",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1963/7",
      "importance": 1,
      "event": "東京証券取引所市場第二部に株式を上場",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1964/4",
      "importance": 1,
      "event": "敦賀事業所を開設し合板工場の操業を開始",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1964/5",
      "importance": 1,
      "event": "東京証券取引所・大阪証券取引所の市場第一部に指定",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1964/8",
      "importance": 2,
      "event": "堺事業所でプレハブ住宅の本格生産を開始",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1967/11",
      "importance": 1,
      "event": "福島県いわき市に小名浜合板を設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1968/3",
      "importance": 1,
      "event": "山口県平生町に永大木材工業を設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1969/8",
      "importance": 1,
      "event": "敦賀事業所にパーティクルボード工場を完成",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1969/12",
      "importance": 2,
      "event": "住宅機器事業を開始",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1973/3",
      "importance": 2,
      "event": "三菱商事との合弁でブラジルに合板会社を設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1978/2",
      "importance": 3,
      "event": "会社更生手続の開始を申立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1978/5",
      "importance": 2,
      "event": "会社更生手続の開始決定",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1978/5",
      "importance": 2,
      "event": "株式が上場廃止となり店頭登録へ移行",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1982/9",
      "importance": 2,
      "event": "更生計画の認可決定。永大木材工業と永大ハウジングを吸収合併",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1993/10",
      "importance": 3,
      "event": "会社更生手続の終結決定",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1995/4",
      "importance": 2,
      "event": "日本製紙との合弁でＭＤＦ製造のエヌ・アンド・イーを設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "1997/6",
      "importance": 1,
      "event": "ブラジル合弁会社の三菱商事保有株を取得し子会社化",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2005/3",
      "importance": 1,
      "event": "小名浜合板の株式を追加取得し子会社化",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2007/2",
      "importance": 3,
      "event": "東京証券取引所市場第二部に株式を再上場",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2008/9",
      "importance": 2,
      "event": "ブラジル子会社が自己破産を申立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2011/6",
      "importance": 1,
      "event": "ベトナムにEidai Vietnamを設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2011/12",
      "importance": 1,
      "event": "東京証券取引所市場第一部に銘柄指定",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2013/7",
      "importance": 1,
      "event": "環境事業を開始",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2014/3",
      "importance": 1,
      "event": "太陽光発電事業を開始",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2017/9",
      "importance": 1,
      "event": "インドネシアにPT. Eidai Industries Indonesiaを設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2018/3",
      "importance": 1,
      "event": "環境事業から撤退",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2018/9",
      "importance": 2,
      "event": "台風21号で大阪事業所が甚大な被害",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/5",
      "importance": 1,
      "event": "日本ノボパン工業との合弁でＥＮボードを設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2020/4",
      "importance": 1,
      "event": "関東住設産業を設立",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2022/4",
      "importance": 1,
      "event": "東京証券取引所スタンダード市場へ移行",
      "source": "有価証券報告書「沿革」"
    },
    {
      "date": "2023/5",
      "importance": 2,
      "event": "敦賀事業所のパーティクルボード工場で火災事故",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/8",
      "importance": 2,
      "event": "敦賀ＰＢ工場素材工程の閉鎖を決定",
      "source": "有価証券報告書"
    }
  ]
}