{
  "datasetId": "yugalinks-gold-batch-1-enriched-corridor-exporter-CHN",
  "format": "Parquet",
  "description": "Annual export corridors from China with growth, access, tariff, distance, and partner context for HS6 products.",
  "columns": [
    "year",
    "exporter_iso3",
    "importer_iso3",
    "hs_code",
    "export_value_usd",
    "yoy_growth_pct",
    "cagr_3y_pct",
    "substitution_elasticity",
    "distance_km",
    "shares_land_border",
    "shares_official_language",
    "has_fta",
    "avg_applied_tariff_pct"
  ],
  "columnTypes": {
    "year": "UInt16",
    "exporter_iso3": "String",
    "importer_iso3": "String",
    "hs_code": "String",
    "export_value_usd": "Float64",
    "yoy_growth_pct": "Nullable(Float64)",
    "cagr_3y_pct": "Nullable(Float64)",
    "substitution_elasticity": "Nullable(Float64)",
    "distance_km": "Nullable(Float64)",
    "shares_land_border": "Nullable(UInt8)",
    "shares_official_language": "Nullable(UInt8)",
    "has_fta": "Nullable(UInt8)",
    "avg_applied_tariff_pct": "Nullable(Float64)"
  },
  "coverage": "1995-2024 where reported",
  "rowMeaning": "one year, country pair, and HS6 product",
  "includes": [
    "Annual corridor exports",
    "Market share, supplier, and growth measures",
    "Distance, tariff, access, and concentration context"
  ],
  "metricDefinitions": [
    "USD fields are monetary values denominated in US dollars.",
    "Country fields use three-letter ISO 3166-1 country codes.",
    "HS6 identifies a product at the six-digit Harmonized System level.",
    "Growth percentages compare reported values across the relevant periods; calculated and projected fields are identified in the schema."
  ],
  "source": [
    "OECD Balanced International Merchandise Trade Statistics (BIMTS)",
    "Yugalinks calculated market and corridor context"
  ]
}