diff --git a/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java b/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
index 897b999f..c31432df 100644
--- a/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
+++ b/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
@@ -1869,6 +1869,9 @@ public class EstimateService {
         }
 
         applyExcelNumberFormat(workbook);
+        applyExcelFixedNumberFormat(workbook, Arrays.asList("H25", "C12"), "#,##0.00");
+        applyExcelFixedNumberFormat(workbook, Arrays.asList("I2"), "#,##0.00\" kW\"");
+        applyExcelFixedNumberFormat(workbook, Arrays.asList("X32", "I44"), "#,##0.00");
 
         ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
         workbook.write(byteArrayOutputStream);
@@ -2040,6 +2043,10 @@ public class EstimateService {
       return value;
     }
     String normalized = raw.replace(",", "");
+    String upper = normalized.toUpperCase(Locale.ROOT);
+    if (upper.endsWith("KW")) {
+      normalized = normalized.substring(0, normalized.length() - 2).trim();
+    }
     if (!normalized.matches("[-+]?\\d+(\\.\\d+)?")) {
       return value;
     }
@@ -2122,6 +2129,88 @@ public class EstimateService {
     }
   }
 
+  private static void applyExcelFixedNumberFormat(Workbook workbook, List<String> cellRefs,
+                                                  String formatString) {
+    if (workbook == null || cellRefs == null || formatString == null) {
+      return;
+    }
+    DataFormat dataFormat = workbook.createDataFormat();
+    short numberFormat = dataFormat.getFormat(formatString);
+    Map<Short, CellStyle> styleCache = new HashMap<>();
+
+    for (int s = 0; s < workbook.getNumberOfSheets(); s++) {
+      Sheet sheet = workbook.getSheetAt(s);
+      if (sheet == null) {
+        continue;
+      }
+      for (String ref : cellRefs) {
+        int[] rc = parseCellRef(ref);
+        if (rc == null) {
+          continue;
+        }
+        Row row = sheet.getRow(rc[0]);
+        if (row == null) {
+          continue;
+        }
+        Cell cell = row.getCell(rc[1]);
+        if (cell == null) {
+          continue;
+        }
+        CellType cellType = cell.getCellType();
+        if (cellType == CellType.STRING) {
+          Object parsed = parseExcelNumber(cell.getStringCellValue());
+          if (parsed instanceof Number) {
+            cell.setCellValue(((Number) parsed).doubleValue());
+            cellType = CellType.NUMERIC;
+          }
+        }
+        if (cellType != CellType.NUMERIC) {
+          continue;
+        }
+        CellStyle style = cell.getCellStyle();
+        if (style == null) {
+          style = workbook.createCellStyle();
+        }
+        short styleIdx = style.getIndex();
+        CellStyle cached = styleCache.get(styleIdx);
+        if (cached == null) {
+          CellStyle newStyle = workbook.createCellStyle();
+          newStyle.cloneStyleFrom(style);
+          newStyle.setDataFormat(numberFormat);
+          styleCache.put(styleIdx, newStyle);
+          cached = newStyle;
+        }
+        cell.setCellStyle(cached);
+      }
+    }
+  }
+
+  private static int[] parseCellRef(String ref) {
+    if (ref == null || ref.isEmpty()) {
+      return null;
+    }
+    int i = 0;
+    int col = 0;
+    while (i < ref.length()) {
+      char c = ref.charAt(i);
+      if (c < 'A' || c > 'Z') {
+        break;
+      }
+      col = col * 26 + (c - 'A' + 1);
+      i++;
+    }
+    if (i == 0 || i >= ref.length()) {
+      return null;
+    }
+    int row;
+    try {
+      row = Integer.parseInt(ref.substring(i));
+    } catch (NumberFormatException e) {
+      return null;
+    }
+    return new int[] {row - 1, col - 1};
+  }
+
   /**
    * QSP Q.CAST 견적서 전송 API
    *