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 ],
 "history_columns": [
  "data_month",
  "rate"
 ],
 "id": "ETRX-CN-84",
 "index": "ETRX",
 "label": "China \u2014 machinery (HS 84)",
 "latest": {
  "delta_bps": -8,
  "duty_free_share": 0.253348,
  "first_print_vintage": "2026-08-24",
  "prior_rate": 0.240751,
  "rate": 0.239903,
  "rate_dutiable": 0.321304,
  "vintage_note": "backfill"
 },
 "license": "Free for citation, journalism, research and non-commercial use with attribution (CC BY-NC 4.0). Commercial redistribution and use as a settlement reference require a license.",
 "note": "Machinery and mechanical appliances (HS 84) from China, including computers.",
 "peak": 0.509783,
 "peak_month": "2025-05",
 "rulebook": "https://etrxindex.com/methodology.html",
 "source": "US Census Bureau, International Trade API (imports for consumption)"
}