This interactive treemap visualizes steel scrap export values from various countries to different destinations. The size of each rectangular cell represents the total export value for a country, colored in a uniform green. Clicking a country cell drills down to show the breakdown of export values by specific commodity types, such as "Stainless Steel Waste And Scrap" and "Shredded Steel Scrap." The visualization uses D3.js v7 with the `d3.treemap`, `d3.hierarchy`, and transition animations to smoothly update the layout when drilling down or resetting.