This interactive treemap visualizes steel scrap exports from various countries, showing total export values per country and their breakdown by commodity type. Users can click on a country cell to drill down into its specific commodity details, with a reset button to return to the top-level view. The visualization uses d3.hierarchy, d3.treemap, and d3.scaleSequential with an interpolateRgb color scale, rendering SVG elements with smooth transitions and tooltips for additional information. Data comes from a CSV file containing partner country, commodity description, and value columns.