diff --git a/src/BarCode.Web.Repositories/SerialNumbersRepositories.cs b/src/BarCode.Web.Repositories/SerialNumbersRepositories.cs
index aa8a89f..31780f3 100644
--- a/src/BarCode.Web.Repositories/SerialNumbersRepositories.cs
+++ b/src/BarCode.Web.Repositories/SerialNumbersRepositories.cs
@@ -358,11 +358,11 @@ namespace BarCode.Web.Repositories
             int total = await query.CountAsync();
             var list = await query.Select(s => new SerialNumberInfoResponse()
             {
-                Specifications =s.serial.Specifications==null?s.sg.Specifications: s.serial.Specifications,// _erpBasicDataExtendService.GetMaterialSpecifications(materials, s.serial.MaterialNumber),
+                Specifications =string.IsNullOrEmpty(s.serial.Specifications)?s.sg.Specifications: s.serial.Specifications,// _erpBasicDataExtendService.GetMaterialSpecifications(materials, s.serial.MaterialNumber),
                 Old_Specifications = s.serial.old_Specifications==null?(_erpBasicDataExtendService.GetMaterialSpecifications(materials, s.serial.Old_MaterialNumber == null ? "" : s.serial.Old_MaterialNumber)) : s.serial.old_Specifications,//_erpBasicDataExtendService.GetMaterialSpecifications(materials, s.serial.Old_MaterialNumber == null ? "" : s.serial.Old_MaterialNumber),
                 MaterialNumber = s.serial.MaterialNumber,
-                MaterialName = s.serial.MaterialName == null ? s.sg.MaterialName: s.serial.MaterialName,// _erpBasicDataExtendService.GetMaterialName(materials, s.serial.MaterialNumber),
-                BarCode = s.serial.BarCode == null ? s.sg.BarCode: s.serial.BarCode,// _erpBasicDataExtendService.GetMaterialBarCode(materials, s.serial.MaterialNumber),
+                MaterialName = string.IsNullOrEmpty(s.serial.MaterialName)? s.sg.MaterialName: s.serial.MaterialName,// _erpBasicDataExtendService.GetMaterialName(materials, s.serial.MaterialNumber),
+                BarCode = string.IsNullOrEmpty(s.serial.BarCode) ? s.sg.BarCode: s.serial.BarCode,// _erpBasicDataExtendService.GetMaterialBarCode(materials, s.serial.MaterialNumber),
                 SerialNumber = s.serial.SerialNumber,
                 NumberCode = s.serial.NumberCode,
                 Number = s.sg == null ? 0 : s.sg.Number,