diff --git a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/AutoControl/Entity/GelerWeterControlsEntity.cs b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/AutoControl/Entity/GelerWeterControlsEntity.cs
index 8f69c11..4ea1dc5 100644
--- a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/AutoControl/Entity/GelerWeterControlsEntity.cs
+++ b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/AutoControl/Entity/GelerWeterControlsEntity.cs
@@ -1,4 +1,5 @@
 using Mesnac.Controls.Base;
+using Mesnac.Controls.Default;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -19,8 +20,10 @@ namespace Mesnac.Action.ChemicalWeighing.AutoControl.Entity
         public IBaseControl Line6 { get; set; }
         public IBaseControl Line7 { get; set; }
         public IBaseControl Line8 { get; set; }
-        public IBaseControl ChooseMaterial1 { get; set; }
-        public IBaseControl ChooseMaterial2 { get; set; }
+
+        public MCCombobox ChooseMaterial1 { get; set; }
+        public MCCombobox ChooseMaterial2 { get; set; }
+
         public IBaseControl MaterialWeight1 { get; set; }
         public IBaseControl MaterialWeight2 { get; set; }
         public IBaseControl MaterialTolerance1 { get; set; }
diff --git a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/AutoControl/GelerWeterControl.cs b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/AutoControl/GelerWeterControl.cs
index dd18b26..0faaf74 100644
--- a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/AutoControl/GelerWeterControl.cs
+++ b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/AutoControl/GelerWeterControl.cs
@@ -6,6 +6,7 @@ using Mesnac.Action.ChemicalWeighing.AutoControl.DB;
 using Mesnac.Action.ChemicalWeighing.AutoControl.Entity;
 using Mesnac.Action.ChemicalWeighing.LjMixManager;
 using Mesnac.Controls.Base;
+using Mesnac.Controls.Default;
 using Mesnac.Core.Service;
 using System;
 using System.Collections.Generic;
@@ -13,6 +14,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
+using Button = System.Windows.Forms.Button;
 
 namespace Mesnac.Action.ChemicalWeighing.AutoControl
 {
@@ -92,8 +94,9 @@ namespace Mesnac.Action.ChemicalWeighing.AutoControl
             ControlsEntity.Line7 = GetBaseControl("Line7");
             ControlsEntity.Line8 = GetBaseControl("Line8");
 
-            ControlsEntity.ChooseMaterial1 = GetBaseControl("ChooseMaterial1");
-            ControlsEntity.ChooseMaterial2 = GetBaseControl("ChooseMaterial2");
+            ControlsEntity.ChooseMaterial1 = GetComboBoxControl("ChooseMaterial1");
+            ControlsEntity.ChooseMaterial2 = GetComboBoxControl("ChooseMaterial2");
+
             ControlsEntity.MaterialWeight1 = GetBaseControl("MaterialWeight1");
             ControlsEntity.MaterialWeight2 = GetBaseControl("MaterialWeight2");
             ControlsEntity.MaterialTolerance1 = GetBaseControl("MaterialTolerance1");
@@ -235,6 +238,11 @@ namespace Mesnac.Action.ChemicalWeighing.AutoControl
         {
             return McControls.First(x => x.Name == name) as Button;
         }
+
+        private MCCombobox GetComboBoxControl(string name)
+        {
+            return McControls.First(x => x.Name == name) as MCCombobox;
+        }
     }
 
 }
diff --git a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Mesnac.Action.ChemicalWeighing.csproj b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Mesnac.Action.ChemicalWeighing.csproj
index 28ceacd..7560737 100644
--- a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Mesnac.Action.ChemicalWeighing.csproj
+++ b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Mesnac.Action.ChemicalWeighing.csproj
@@ -176,9 +176,6 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\PlugInPlatform\Mesnac.PlugIn.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Office.Interop.Excel">
-      <HintPath>..\..\Microsoft.Office.Interop.Excel.dll</HintPath>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Core" />