Update app.py

app.py

@@ -55,7 +55,7 @@ def convert_ci(by_line_item_file, combined_file, password, max_rows):
     # Clean Tariff_Number and MID_Code for consistent merging
     combined_df["Tariff_Number"] = combined_df["Tariff_Number"].apply(lambda x: str(x).replace('.0', '') if isinstance(x, float) and str(x).endswith('.0') else str(x))
     combined_df["MID_Code"] = combined_df["MID_Code"].astype(str)
-    combined_df["Manufacturer_Zip"] = combined_df["Manufacturer_Zip"].astype(str)
+    combined_df["Manufacturer_Zip"] = combined_df["Manufacturer_Zip"].astype(str).apply(lambda x: f"0{x}" if len(x) == 5 else x)
 
     # Format manufacturer address components
     def extract_address_parts(row):