diff --git a/src/main/java/mjkf/xinke/main/model/db/DataNetwork.java b/src/main/java/mjkf/xinke/main/model/db/DataNetwork.java
index e12b9e2..bfff011 100644
--- a/src/main/java/mjkf/xinke/main/model/db/DataNetwork.java
+++ b/src/main/java/mjkf/xinke/main/model/db/DataNetwork.java
@@ -87,6 +87,7 @@ public class DataNetwork extends Model<DataNetwork> {
         var policy = Row.MissingCellPolicy.CREATE_NULL_AS_BLANK;
         row.getCell(0, policy).setCellType(CellType.STRING);
         row.getCell(5, policy).setCellType(CellType.NUMERIC);
+        row.getCell(7, policy).setCellType(CellType.STRING);
         this.setMaterialId(row.getCell(0, policy).getStringCellValue());
         this.setName(row.getCell(1, policy).getStringCellValue().replace(" ", ""));
         this.setSpec(row.getCell(2, policy).getStringCellValue().replace(" ", ""));