diff --git a/AccountingWarehouseProducts/AccountingWarehouseProducts.sln b/AccountingWarehouseProducts/AccountingWarehouseProducts.sln
index e49f4b8..cfb45cd 100644
--- a/AccountingWarehouseProducts/AccountingWarehouseProducts.sln
+++ b/AccountingWarehouseProducts/AccountingWarehouseProducts.sln
@@ -9,6 +9,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AccountingWarehouseProducts
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AccountingWarehouseProductsContracts", "AccountingWarehouseProductsContracts\AccountingWarehouseProductsContracts.csproj", "{4633456D-A979-41D6-9D0A-A6DAA6A17766}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AccountingWarehouseProductsBusinessLogic", "AccountingWarehouseProductsBusinessLogic\AccountingWarehouseProductsBusinessLogic.csproj", "{7F90D2FA-8F89-4200-92FC-CFFF489AD6C9}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -27,6 +29,10 @@ Global
 		{4633456D-A979-41D6-9D0A-A6DAA6A17766}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4633456D-A979-41D6-9D0A-A6DAA6A17766}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4633456D-A979-41D6-9D0A-A6DAA6A17766}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7F90D2FA-8F89-4200-92FC-CFFF489AD6C9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7F90D2FA-8F89-4200-92FC-CFFF489AD6C9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7F90D2FA-8F89-4200-92FC-CFFF489AD6C9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7F90D2FA-8F89-4200-92FC-CFFF489AD6C9}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/AccountingWarehouseProductsBusinessLogic.csproj b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/AccountingWarehouseProductsBusinessLogic.csproj
new file mode 100644
index 0000000..a936981
--- /dev/null
+++ b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/AccountingWarehouseProductsBusinessLogic.csproj
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AccountingWarehouseProductsContracts\AccountingWarehouseProductsContracts.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/OrderLogic.cs b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/OrderLogic.cs
new file mode 100644
index 0000000..366d6e5
--- /dev/null
+++ b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/OrderLogic.cs
@@ -0,0 +1,136 @@
+using AccountingWarehouseProductsContracts.BindingModels;
+using AccountingWarehouseProductsContracts.BusinessLogicsContracts;
+using AccountingWarehouseProductsContracts.SearchModels;
+using AccountingWarehouseProductsContracts.StoragesContracts;
+using AccountingWarehouseProductsContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AccountingWarehouseProductsBusinessLogic.BusinessLogic
+{
+    public class OrderLogic : IOrderLogic
+    {
+        private readonly IOrderStorage _orderStorage;
+
+        public OrderLogic(IOrderStorage orderStorage)
+        {
+            _orderStorage = orderStorage;
+        }
+
+        public OrderViewModel? ReadElement(OrderSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            var element = _orderStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
+        {
+            var list = model == null ? _orderStorage.GetFullList() : _orderStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Create(OrderBindingModel model)
+        {
+            CheckModel(model);
+            if (_orderStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(OrderBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_orderStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(OrderBindingModel model)
+        {
+            CheckModel(model);
+            if (_orderStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool OrderedOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, AccountingWarehouseProductsDataModels.Enums.OrderStatus.Заказан);
+        }
+
+        public bool ComeOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, AccountingWarehouseProductsDataModels.Enums.OrderStatus.Пришёл);
+        }
+
+        public bool TakeOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, AccountingWarehouseProductsDataModels.Enums.OrderStatus.Принят);
+        }
+
+        public bool ArrangeOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, AccountingWarehouseProductsDataModels.Enums.OrderStatus.Расстановлен);
+        }
+
+        public bool ChekOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, AccountingWarehouseProductsDataModels.Enums.OrderStatus.Проверен);
+        }
+
+        public bool DeliverOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, AccountingWarehouseProductsDataModels.Enums.OrderStatus.Доставлен);
+        }
+
+        private bool StatusUpdate(OrderBindingModel model, AccountingWarehouseProductsDataModels.Enums.OrderStatus newStatus)
+        {
+
+            if (model.Status + 1 != newStatus)
+            {
+                return false;
+            }
+            model.Status = newStatus;
+            if (_orderStorage.Update(model) == null)
+            {
+                model.Status--;
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(OrderBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+        }
+    }
+}
diff --git a/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/ProductLogic.cs b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/ProductLogic.cs
new file mode 100644
index 0000000..07a4bad
--- /dev/null
+++ b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/ProductLogic.cs
@@ -0,0 +1,93 @@
+using AccountingWarehouseProductsContracts.BindingModels;
+using AccountingWarehouseProductsContracts.BusinessLogicsContracts;
+using AccountingWarehouseProductsContracts.SearchModels;
+using AccountingWarehouseProductsContracts.StoragesContracts;
+using AccountingWarehouseProductsContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AccountingWarehouseProductsBusinessLogic.BusinessLogic
+{
+    public class ProductLogic : IProductLogic
+    {
+        private readonly IProductStorage _productStorage;
+
+        public ProductLogic(IProductStorage buyerStorage)
+        {
+            _productStorage = buyerStorage;
+        }
+        public ProductViewModel? ReadElement(ProductSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            var element = _productStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<ProductViewModel>? ReadList(ProductSearchModel? model)
+        {
+            var list = model == null ? _productStorage.GetFullList() : _productStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Create(ProductBindingModel model)
+        {
+            CheckModel(model);
+            if (_productStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ProductBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_productStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(ProductBindingModel model)
+        {
+            CheckModel(model);
+            if (_productStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ProductBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ProductName))
+            {
+                throw new ArgumentNullException("Нет названия", nameof(model.ProductName));
+            }
+        }
+    }
+}
diff --git a/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/ShipmentLogic.cs b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/ShipmentLogic.cs
new file mode 100644
index 0000000..2721b66
--- /dev/null
+++ b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/ShipmentLogic.cs
@@ -0,0 +1,89 @@
+using AccountingWarehouseProductsContracts.BindingModels;
+using AccountingWarehouseProductsContracts.BusinessLogicsContracts;
+using AccountingWarehouseProductsContracts.SearchModels;
+using AccountingWarehouseProductsContracts.StoragesContracts;
+using AccountingWarehouseProductsContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AccountingWarehouseProductsBusinessLogic.BusinessLogic
+{
+    public class ShipmentLogic : IShipmentLogic
+    {
+        private readonly IShipmentStorage _shipmentStorage;
+
+        public ShipmentLogic(IShipmentStorage shipmentStorage)
+        {
+            _shipmentStorage = shipmentStorage;
+        }
+        public ShipmentViewModel? ReadElement(ShipmentSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            var element = _shipmentStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<ShipmentViewModel>? ReadList(ShipmentSearchModel? model)
+        {
+            var list = model == null ? _shipmentStorage.GetFullList() : _shipmentStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Create(ShipmentBindingModel model)
+        {
+            CheckModel(model);
+            if (_shipmentStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ShipmentBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_shipmentStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(ShipmentBindingModel model)
+        {
+            CheckModel(model);
+            if (_shipmentStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ShipmentBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+        }
+    }
+}
diff --git a/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/StandLogic.cs b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/StandLogic.cs
new file mode 100644
index 0000000..b2c9ba3
--- /dev/null
+++ b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/StandLogic.cs
@@ -0,0 +1,89 @@
+using AccountingWarehouseProductsContracts.BindingModels;
+using AccountingWarehouseProductsContracts.BusinessLogicsContracts;
+using AccountingWarehouseProductsContracts.SearchModels;
+using AccountingWarehouseProductsContracts.StoragesContracts;
+using AccountingWarehouseProductsContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AccountingWarehouseProductsBusinessLogic.BusinessLogic
+{
+    public class StandLogic : IStandLogic
+    {
+        private readonly IStandStorage _standStorage;
+
+        public StandLogic(IStandStorage standStorage)
+        {
+            _standStorage = standStorage;
+        }
+        public StandViewModel? ReadElement(StandSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            var element = _standStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<StandViewModel>? ReadList(StandSearchModel? model)
+        {
+            var list = model == null ? _standStorage.GetFullList() : _standStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Create(StandBindingModel model)
+        {
+            CheckModel(model);
+            if (_standStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(StandBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_standStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(StandBindingModel model)
+        {
+            CheckModel(model);
+            if (_standStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(StandBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+        }
+    }
+}
diff --git a/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/SupplierLogic.cs b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/SupplierLogic.cs
new file mode 100644
index 0000000..8225e21
--- /dev/null
+++ b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/SupplierLogic.cs
@@ -0,0 +1,93 @@
+using AccountingWarehouseProductsContracts.BindingModels;
+using AccountingWarehouseProductsContracts.BusinessLogicsContracts;
+using AccountingWarehouseProductsContracts.SearchModels;
+using AccountingWarehouseProductsContracts.StoragesContracts;
+using AccountingWarehouseProductsContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AccountingWarehouseProductsBusinessLogic.BusinessLogic
+{
+    public class SupplierLogic : ISupplierLogic
+    {
+        private readonly ISupplierStorage _supplierStorage;
+
+        public SupplierLogic(ISupplierStorage supplierStorage)
+        {
+            _supplierStorage = supplierStorage;
+        }
+        public SupplierViewModel? ReadElement(SupplierSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            var element = _supplierStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<SupplierViewModel>? ReadList(SupplierSearchModel? model)
+        {
+            var list = model == null ? _supplierStorage.GetFullList() : _supplierStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Create(SupplierBindingModel model)
+        {
+            CheckModel(model);
+            if (_supplierStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(SupplierBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_supplierStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(SupplierBindingModel model)
+        {
+            CheckModel(model);
+            if (_supplierStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(SupplierBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.SupplierName))
+            {
+                throw new ArgumentNullException("Нет названия", nameof(model.SupplierName));
+            }
+        }
+    }
+}
diff --git a/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/WarehouseLogic.cs b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/WarehouseLogic.cs
new file mode 100644
index 0000000..90c987f
--- /dev/null
+++ b/AccountingWarehouseProducts/AccountingWarehouseProductsBusinessLogic/BusinessLogic/WarehouseLogic.cs
@@ -0,0 +1,93 @@
+using AccountingWarehouseProductsContracts.BindingModels;
+using AccountingWarehouseProductsContracts.BusinessLogicsContracts;
+using AccountingWarehouseProductsContracts.SearchModels;
+using AccountingWarehouseProductsContracts.StoragesContracts;
+using AccountingWarehouseProductsContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AccountingWarehouseProductsBusinessLogic.BusinessLogic
+{
+    public class WarehouseLogic : IWarehouseLogic
+    {
+        private readonly IWarehouseStorage _warehouseStorage;
+
+        public WarehouseLogic(IWarehouseStorage warehouseStorage)
+        {
+            _warehouseStorage = warehouseStorage;
+        }
+        public WarehouseViewModel? ReadElement(WarehouseSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            var element = _warehouseStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<WarehouseViewModel>? ReadList(WarehouseSearchModel? model)
+        {
+            var list = model == null ? _warehouseStorage.GetFullList() : _warehouseStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Create(WarehouseBindingModel model)
+        {
+            CheckModel(model);
+            if (_warehouseStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(WarehouseBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_warehouseStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(WarehouseBindingModel model)
+        {
+            CheckModel(model);
+            if (_warehouseStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(WarehouseBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.WarehouseName))
+            {
+                throw new ArgumentNullException("Нет названия", nameof(model.WarehouseName));
+            }
+        }
+    }
+}