diff --git a/PrecastConcretePlant/PrecastConcretePlant/DataGridViewExtension.cs b/PrecastConcretePlant/PrecastConcretePlant/DataGridViewExtension.cs
index 0f857b4..2db1e34 100644
--- a/PrecastConcretePlant/PrecastConcretePlant/DataGridViewExtension.cs
+++ b/PrecastConcretePlant/PrecastConcretePlant/DataGridViewExtension.cs
@@ -1,9 +1,4 @@
 using PrecastConcretePlantContracts.Attributes;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace PrecastConcretePlantView
 {