This example shows a multi-series 3D bar chart comparing the employee counts of companies across eight months. The chart is rendered using the d3-x3d library, which bridges D3.js and X3D, with data loaded from a CSV file via `d3.csv`. Each company’s monthly values are parsed into a key-value structure and passed to the `barChartMultiSeries` component. The visualization uses D3 v5 for data parsing and selection, while the actual 3D rendering is handled by x3dom, a WebGL-based X3D viewer.