diff --git a/FruitBankHybrid.Shared/Components/GridProductDtoTemplate.razor b/FruitBankHybrid.Shared/Components/GridProductDtoTemplate.razor
index 3b8bcc2..599b07f 100644
--- a/FruitBankHybrid.Shared/Components/GridProductDtoTemplate.razor
+++ b/FruitBankHybrid.Shared/Components/GridProductDtoTemplate.razor
@@ -37,6 +37,12 @@
 
 
 			<DxTabs ActiveTabIndexChanged="(i) => OnActiveTabChanged(i, productId)">
+				<DxTabPage Text="Készlet mennyiség változások" Visible="@LoggedInModel.IsAdministrator">
+					@{
+						var contextIds = new[] { (object)productDto.Id };
+						<GridStockQuantityHistoryDtoTemplate ContextIds="@(contextIds)" ParentDataItem="@productDto" />
+					}
+				</DxTabPage>
 				<DxTabPage Text="Rendelések melyben megtalálható" Visible="@LoggedInModel.IsAdministrator">
 					@{
 						//GetOrderDtosFromDbAsync(productId).Forget();
diff --git a/FruitBankHybrid.Shared/Layout/MainLayout.razor.cs b/FruitBankHybrid.Shared/Layout/MainLayout.razor.cs
index 178d594..812df12 100644
--- a/FruitBankHybrid.Shared/Layout/MainLayout.razor.cs
+++ b/FruitBankHybrid.Shared/Layout/MainLayout.razor.cs
@@ -65,11 +65,11 @@ public partial class MainLayout : LayoutComponentBase
         }
     }
 
-    private async Task SignalRClientOnMessageReceived(int messageTag, string? jsonMessage)
+    private async Task SignalRClientOnMessageReceived(int messageTag, SignalResponseDataMessage? responseDataMessage)
     {
         if (messageTag != SignalRTags.NotificationReceived || !LoggedInModel.IsLoggedIn) return;
 
-        var notificationMessage = jsonMessage?.JsonTo<SignalRMessageToClientWithText<OrderDto>>();
+        var notificationMessage = responseDataMessage?.GetResponseData<SignalRMessageToClientWithText<OrderDto>>();
         if (notificationMessage == null)
         {
             _logger.Error($"notificationMessage == null");
diff --git a/FruitBankHybrid.Shared/Pages/MeasuringOut.razor.cs b/FruitBankHybrid.Shared/Pages/MeasuringOut.razor.cs
index e6827a9..116dbd5 100644
--- a/FruitBankHybrid.Shared/Pages/MeasuringOut.razor.cs
+++ b/FruitBankHybrid.Shared/Pages/MeasuringOut.razor.cs
@@ -1,5 +1,6 @@
 using AyCode.Core.Extensions;
 using AyCode.Core.Loggers;
+using AyCode.Services.SignalRs;
 using DevExpress.Blazor;
 using FruitBank.Common.Dtos;
 using FruitBank.Common.Entities;
@@ -51,14 +52,14 @@ namespace FruitBankHybrid.Shared.Pages
             await base.OnInitializedAsync();
         }
 
-        private async Task SignalRClientOnMessageReceived(int messageTag, string? jsonMessage)
+        private async Task SignalRClientOnMessageReceived(int messageTag, SignalResponseDataMessage? responseDataMessage)
         {
             if (!LoggedInModel.IsLoggedIn) return;
 
             if (messageTag != SignalRTags.SendOrderItemDeleted && messageTag != SignalRTags.SendOrderChanged && messageTag != SignalRTags.SendOrderItemChanged &&
                 messageTag != SignalRTags.SendOrderItemPalletChanged && messageTag != SignalRTags.SendProductChanged) return;
 
-            _logger.DebugConditional($"SignalRClientOnMessageReceived received. {jsonMessage}");
+            _logger.DebugConditional($"SignalRClientOnMessageReceived received. {responseDataMessage}");
 
             OrderDto? orderDto;
             OrderItem? orderItem;
@@ -67,7 +68,7 @@ namespace FruitBankHybrid.Shared.Pages
             switch (messageTag)
             {
                 case SignalRTags.SendOrderItemDeleted:
-                    orderItem = jsonMessage?.JsonTo<OrderItem>();
+                    orderItem = responseDataMessage?.GetResponseData<OrderItem>();
                     if (orderItem == null) break;
 
                     lock (_lock)
@@ -79,7 +80,7 @@ namespace FruitBankHybrid.Shared.Pages
                     await InvokeAsync(StateHasChanged);
                     return;
                 case SignalRTags.SendOrderChanged:
-                    orderDto = jsonMessage?.JsonTo<OrderDto>();
+                    orderDto = responseDataMessage?.GetResponseData<OrderDto>();
                     if (orderDto == null) break;
 
                     if (orderDto.DateOfReceipt == null) return;
@@ -104,7 +105,7 @@ namespace FruitBankHybrid.Shared.Pages
                     await InvokeAsync(StateHasChanged);
                     return;
                 case SignalRTags.SendOrderItemChanged:
-                    orderItemDto = jsonMessage?.JsonTo<OrderItemDto>();
+                    orderItemDto = responseDataMessage?.GetResponseData<OrderItemDto>();
                     if (orderItemDto == null) break;
 
                     lock (_lock)
@@ -123,7 +124,7 @@ namespace FruitBankHybrid.Shared.Pages
                     await InvokeAsync(StateHasChanged);
                     return;
                 case SignalRTags.SendOrderItemPalletChanged:
-                    var orderItemPallet = jsonMessage?.JsonTo<OrderItemPallet>();
+                    var orderItemPallet = responseDataMessage?.GetResponseData<OrderItemPallet>();
                     if (orderItemPallet == null) break;
 
                     lock (_lock)
@@ -143,7 +144,7 @@ namespace FruitBankHybrid.Shared.Pages
                     await InvokeAsync(StateHasChanged);
                     return;
                 case SignalRTags.SendProductChanged:
-                    var productDto = jsonMessage?.JsonTo<ProductDto>();
+                    var productDto = responseDataMessage?.GetResponseData<ProductDto>();
                     if (productDto == null) break;
 
                     await InvokeAsync(StateHasChanged);
diff --git a/FruitBankHybrid.Shared/Services/SignalRs/FruitBankSignalRClient.cs b/FruitBankHybrid.Shared/Services/SignalRs/FruitBankSignalRClient.cs
index 11711f6..a39f9c6 100644
--- a/FruitBankHybrid.Shared/Services/SignalRs/FruitBankSignalRClient.cs
+++ b/FruitBankHybrid.Shared/Services/SignalRs/FruitBankSignalRClient.cs
@@ -40,13 +40,13 @@ namespace FruitBankHybrid.Shared.Services.SignalRs
         /// <summary>
         /// MessageTag, JSON
         /// </summary>
-        public event Func<int, string?, Task> OnMessageReceived = null!;
+        public event Func<int, SignalResponseDataMessage?, Task> OnMessageReceived = null!;
 
         protected override async Task MessageReceived(int messageTag, byte[] messageBytes)
         {
-            var jsonMessage = messageBytes.MessagePackTo<SignalResponseJsonMessage>(ContractlessStandardResolver.Options);
+            var responseDataMessage = messageBytes.BinaryTo<SignalResponseDataMessage>();
 
-            await OnMessageReceived(messageTag, jsonMessage.ResponseData);
+            await OnMessageReceived(messageTag, responseDataMessage);
         }
 
         private void SendMessageToAllClients(int messageTag, string message)
diff --git a/FruitBankHybrid/FruitBankHybrid.csproj b/FruitBankHybrid/FruitBankHybrid.csproj
index 12b3d17..0db0fbc 100644
--- a/FruitBankHybrid/FruitBankHybrid.csproj
+++ b/FruitBankHybrid/FruitBankHybrid.csproj
@@ -90,6 +90,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="DevExpress.Data" Version="25.1.3" />
+		<PackageReference Include="Microsoft.Extensions.ObjectPool" Version="10.0.1" />
 		<!--<PackageReference Include="DevExpress.Maui.Controls" Version="25.1.3" />
     <PackageReference Include="DevExpress.Maui.Editors" Version="25.1.3" />
     <PackageReference Include="DevExpress.Maui.CollectionView" Version="25.1.3" />-->