Prompt Description

Chart Type: Waterfall Chart Data and Visual Design: 1. Starting Column: · Label: Total Cost Before Optimization · Value: 68.5 million yuan · Color: Use a neutral color (such as dark gray) to represent the initial state. 2. Intermediate Increase/Decrease Items (arranged sequentially): · Raw Material Reduction: · Label: Raw Material Optimization · Value: -7 million yuan (35 million → 28 million) · Color: Use blue. · Fermentation Process Reduction: · Label: Process Optimization · Value: -4.5 million yuan (15 million → 10.5 million) · Color: Use blue. · Strain-Related Increase: · Label: Strain Upgrade · Value: +1.5 million yuan (2 million → 3.5 million) · Color: Use orange. · Environmental Cost Reversal: · Label: Environmental Benefits · Value: +16.7 million yuan (10.5 million → -6.2 million, i.e., saving 10.5 million and generating 6.2 million in revenue, for a total positive contribution of 16.7 million) · Color: Use blue. · Quality Control: · Label: Quality System · Value: 0 yuan · Color: Can use light gray or the same color as the starting column to indicate no change. This item can be used as a "connecting column" or labeled separately in the chart. 3. Final Column: · Label: Total Cost After Optimization · Value: 41.8 million yuan · Color: Use a color that contrasts sharply with the starting column (such as dark blue) to represent the final result. Chart Elements: · Title: Waterfall Chart of L-Lactic Acid Production Cost Optimization (Unit: 10,000 yuan) · Data Labels: Clearly display the absolute value at the top or inside each column. · Connecting Lines: Use thin lines to connect the tops of each column, clearly showing the flow and accumulation of values.