{
  "stock_code": "4183",
  "company_name": "三井化学",
  "company_color": "#00A1E9",
  "industry": "chemical",
  "published": "2026-04-07",
  "updated": "2026-04-27",
  "found": {
    "year": 1933,
    "location": "福岡県大牟田市",
    "founder": "※三井鉱山"
  },
  "listing": {
    "listed_year": 1962,
    "delisted_year": 2003,
    "unlisted": false
  },
  "old_name": "三井東圧化学"
}