diff --git a/assets/local/localization_en.json b/assets/local/localization_en.json
index c3fa161..dab65df 100644
--- a/assets/local/localization_en.json
+++ b/assets/local/localization_en.json
@@ -13,6 +13,7 @@
     "btn.ok": "Ok",
     "feet":"Feet",
     "inch":"Inch",
+    "back.button_confirm":"Are you sure you want to continue without saving changes?",
     "Buttons End ================================================================":"",
 
     "Offline Start ================================================================":"",
diff --git a/assets/local/localization_mu.json b/assets/local/localization_mu.json
index 91dd517..1b26bf1 100644
--- a/assets/local/localization_mu.json
+++ b/assets/local/localization_mu.json
@@ -12,6 +12,7 @@
     "btn.ok": "အိုကေ",
     "feet":"ပေ",
     "inch":"လက်မ",
+    "back.button_confirm":"Are you sure you want to continue without saving changes?",
     "Buttons End ================================================================":"",
 
     "Offline Start ================================================================":"",
diff --git a/lib/pages/carton/carton_cargo_table.dart b/lib/pages/carton/carton_cargo_table.dart
index 8778547..140d8d3 100644
--- a/lib/pages/carton/carton_cargo_table.dart
+++ b/lib/pages/carton/carton_cargo_table.dart
@@ -1,5 +1,6 @@
 import 'package:fcs/domain/entities/cargo_type.dart';
 import 'package:fcs/helpers/theme.dart';
+import 'package:fcs/pages/main/util.dart';
 import 'package:fcs/pages/widgets/local_text.dart';
 import 'package:fcs/pages/widgets/my_data_table.dart';
 import 'package:flutter/cupertino.dart';
@@ -25,6 +26,8 @@ class CargoTable extends StatefulWidget {
 
 class _CargoTableState extends State<CargoTable> {
   double totalWeight = 0;
+  List<CargoType> _cargos = [];
+  double remainingWeight = 0;
   @override
   Widget build(BuildContext context) {
     return MyDataTable(
@@ -54,12 +57,13 @@ class _CargoTableState extends State<CargoTable> {
       return [];
     }
 
-    double _total = 0;
     var rows = widget.cargoTypes.map((c) {
-      _total += c.weight;
-
       return MyDataRow(
         onSelectChanged: (bool selected) async {
+          if (this.totalWeight <= 0) {
+            showMsgDialog(context, "Error", "Please insert total weight");
+            return;
+          }
           CargoType cargo = await Navigator.push<CargoType>(
               context,
               CupertinoPageRoute(
@@ -67,6 +71,12 @@ class _CargoTableState extends State<CargoTable> {
                         cargo: c,
                       )));
           if (widget.onAdd != null) widget.onAdd(cargo);
+          if (cargo == null) return;
+
+          this._cargos.add(cargo);
+          if (this.remainingWeight <= 0) return;
+          this.remainingWeight -= cargo.weight;
+          print("this.remainingWeight>>>${this.remainingWeight}");
         },
         cells: [
           MyDataCell(new Text(
@@ -104,6 +114,7 @@ class _CargoTableState extends State<CargoTable> {
         if (_t == null) return;
         setState(() {
           totalWeight = _t;
+          remainingWeight = _t;
         });
       },
       cells: [
diff --git a/lib/pages/carton/carton_editor.dart b/lib/pages/carton/carton_editor.dart
index 878ad41..724047a 100644
--- a/lib/pages/carton/carton_editor.dart
+++ b/lib/pages/carton/carton_editor.dart
@@ -351,7 +351,11 @@ class _CartonEditorState extends State<CartonEditor> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           shadowColor: Colors.transparent,
           backgroundColor: Colors.white,
diff --git a/lib/pages/carton_size/carton_size_editor.dart b/lib/pages/carton_size/carton_size_editor.dart
index 6c4d51d..06eb228 100644
--- a/lib/pages/carton_size/carton_size_editor.dart
+++ b/lib/pages/carton_size/carton_size_editor.dart
@@ -139,7 +139,11 @@ class _CartonSizeEditorState extends State<CartonSizeEditor> {
             leading: new IconButton(
               icon:
                   new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
-              onPressed: () => Navigator.of(context).pop(),
+              onPressed: () {
+                showConfirmDialog(context, "back.button_confirm", () {
+                  Navigator.of(context).pop();
+                });
+              },
             ),
             shadowColor: Colors.transparent,
             backgroundColor: Colors.white,
diff --git a/lib/pages/contact/contact_editor.dart b/lib/pages/contact/contact_editor.dart
index e91085a..a9c8eee 100644
--- a/lib/pages/contact/contact_editor.dart
+++ b/lib/pages/contact/contact_editor.dart
@@ -81,9 +81,12 @@ class _ContactEditorState extends State<ContactEditor> {
           appBar: AppBar(
               centerTitle: true,
               leading: new IconButton(
-                icon: new Icon(CupertinoIcons.back, color: primaryColor),
-                onPressed: () => Navigator.of(context).pop(),
-              ),
+                  icon: new Icon(CupertinoIcons.back, color: primaryColor),
+                  onPressed: () {
+                    showConfirmDialog(context, "back.button_confirm", () {
+                      Navigator.of(context).pop();
+                    });
+                  }),
               shadowColor: Colors.transparent,
               backgroundColor: Colors.white,
               title: LocalText(
diff --git a/lib/pages/customer/invitation_create.dart b/lib/pages/customer/invitation_create.dart
index 1d3c1fc..318686d 100644
--- a/lib/pages/customer/invitation_create.dart
+++ b/lib/pages/customer/invitation_create.dart
@@ -51,7 +51,11 @@ class _InvitationCreateState extends State<InvitationCreate> {
               CupertinoIcons.back,
               color: primaryColor,
             ),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           title: LocalText(
             context,
diff --git a/lib/pages/delivery/delivery_info.dart b/lib/pages/delivery/delivery_info.dart
index dc0a5c4..2151cba 100644
--- a/lib/pages/delivery/delivery_info.dart
+++ b/lib/pages/delivery/delivery_info.dart
@@ -237,7 +237,11 @@ class _DeliveryInfoState extends State<DeliveryInfo> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           shadowColor: Colors.transparent,
           backgroundColor: Colors.white,
diff --git a/lib/pages/delivery_address/delivery_address_editor.dart b/lib/pages/delivery_address/delivery_address_editor.dart
index f25fce8..78ac361 100644
--- a/lib/pages/delivery_address/delivery_address_editor.dart
+++ b/lib/pages/delivery_address/delivery_address_editor.dart
@@ -106,7 +106,11 @@ class _DeliveryAddressEditorState extends State<DeliveryAddressEditor> {
             centerTitle: true,
             leading: new IconButton(
               icon: new Icon(CupertinoIcons.back, color: primaryColor),
-              onPressed: () => Navigator.of(context).pop(),
+              onPressed: () {
+                showConfirmDialog(context, "back.button_confirm", () {
+                  Navigator.of(context).pop();
+                });
+              },
             ),
             backgroundColor: Colors.white,
             shadowColor: Colors.transparent,
diff --git a/lib/pages/discount/discount_editor.dart b/lib/pages/discount/discount_editor.dart
index e8d0a15..a680dba 100644
--- a/lib/pages/discount/discount_editor.dart
+++ b/lib/pages/discount/discount_editor.dart
@@ -40,7 +40,7 @@ class _DiscountEditorState extends State<DiscountEditor> {
     if (widget.discount != null) {
       _discount = widget.discount;
       _codeController.text = _discount.code;
-      _amountController.text = _discount.amount.toString();
+      _amountController.text = _discount.amount.toStringAsFixed(2);
       _statusController.text = _discount.status;
       customerName = widget.discount.customerName;
       customerId = widget.discount.customerId;
@@ -97,7 +97,11 @@ class _DiscountEditorState extends State<DiscountEditor> {
             ),
             leading: new IconButton(
               icon: new Icon(CupertinoIcons.back),
-              onPressed: () => Navigator.of(context).pop(),
+              onPressed: () {
+                showConfirmDialog(context, "back.button_confirm", () {
+                  Navigator.of(context).pop();
+                });
+              },
             ),
             backgroundColor: primaryColor,
             actions: [
diff --git a/lib/pages/discount/discount_list_row.dart b/lib/pages/discount/discount_list_row.dart
index 9047f3b..868905d 100644
--- a/lib/pages/discount/discount_list_row.dart
+++ b/lib/pages/discount/discount_list_row.dart
@@ -80,7 +80,7 @@ class DiscountListRow extends StatelessWidget {
                   child: Row(
                     children: <Widget>[
                       new Text(
-                        "${discount.amount ?? ''}",
+                        "${discount.amount.toStringAsFixed(2) ?? ''}",
                         style:
                             new TextStyle(fontSize: 15.0, color: Colors.grey),
                       ),
diff --git a/lib/pages/faq/faq_edit_page.dart b/lib/pages/faq/faq_edit_page.dart
index 69eb9be..aee3a4c 100644
--- a/lib/pages/faq/faq_edit_page.dart
+++ b/lib/pages/faq/faq_edit_page.dart
@@ -126,7 +126,11 @@ class _FAQEditorState extends State<FAQEditor> {
               centerTitle: true,
               leading: new IconButton(
                 icon: new Icon(CupertinoIcons.back, color: primaryColor),
-                onPressed: () => Navigator.of(context).pop(),
+                onPressed: () {
+                  showConfirmDialog(context, "back.button_confirm", () {
+                    Navigator.of(context).pop();
+                  });
+                },
               ),
               backgroundColor: Colors.white,
               shadowColor: Colors.transparent,
diff --git a/lib/pages/fcs_shipment/fcs_shipment_editor.dart b/lib/pages/fcs_shipment/fcs_shipment_editor.dart
index 43643af..2c02a43 100644
--- a/lib/pages/fcs_shipment/fcs_shipment_editor.dart
+++ b/lib/pages/fcs_shipment/fcs_shipment_editor.dart
@@ -59,9 +59,9 @@ class _FcsShipmentEditorState extends State<FcsShipmentEditor> {
       _consigneeController.text = _shipment.consignee;
       _portController.text = _shipment.port;
       _destinationController.text = _shipment.destination;
-    }else{
-      var mainModel = Provider.of<MainModel>(context,listen: false);
-      _currentShipmentType =mainModel.setting.shipmentTypes[0];
+    } else {
+      var mainModel = Provider.of<MainModel>(context, listen: false);
+      _currentShipmentType = mainModel.setting.shipmentTypes[0];
     }
   }
 
@@ -93,7 +93,11 @@ class _FcsShipmentEditorState extends State<FcsShipmentEditor> {
           shadowColor: Colors.transparent,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back, color: primaryColor),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: Colors.white,
           title: LocalText(
diff --git a/lib/pages/invoice/editor/invoice_editor.dart b/lib/pages/invoice/editor/invoice_editor.dart
index 783a4f2..8bab876 100644
--- a/lib/pages/invoice/editor/invoice_editor.dart
+++ b/lib/pages/invoice/editor/invoice_editor.dart
@@ -315,7 +315,11 @@ class _InvoiceEditorState extends State<InvoiceEditor> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back, color: primaryColor),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: Colors.white,
           shadowColor: Colors.transparent,
diff --git a/lib/pages/package/package_editor.dart b/lib/pages/package/package_editor.dart
index 7216f63..0f488f3 100644
--- a/lib/pages/package/package_editor.dart
+++ b/lib/pages/package/package_editor.dart
@@ -91,7 +91,11 @@ class _PackageEditorPageState extends State<PackageEditorPage> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           shadowColor: Colors.transparent,
           backgroundColor: Colors.white,
diff --git a/lib/pages/payment_methods/payment_method_editor.dart b/lib/pages/payment_methods/payment_method_editor.dart
index ec9be49..334b0ef 100644
--- a/lib/pages/payment_methods/payment_method_editor.dart
+++ b/lib/pages/payment_methods/payment_method_editor.dart
@@ -60,7 +60,11 @@ class _PaymentMethodEditorState extends State<PaymentMethodEditor> {
             centerTitle: true,
             leading: new IconButton(
               icon: new Icon(CupertinoIcons.back, color: primaryColor),
-              onPressed: () => Navigator.of(context).pop(),
+              onPressed: () {
+                showConfirmDialog(context, "back.button_confirm", () {
+                  Navigator.of(context).pop();
+                });
+              },
             ),
             title: LocalText(
               context,
diff --git a/lib/pages/processing/processing_edit_editor.dart b/lib/pages/processing/processing_edit_editor.dart
index 839d6a1..858f9bc 100644
--- a/lib/pages/processing/processing_edit_editor.dart
+++ b/lib/pages/processing/processing_edit_editor.dart
@@ -117,7 +117,11 @@ class _ProcessingEditEditorState extends State<ProcessingEditEditor> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           shadowColor: Colors.transparent,
           backgroundColor: Colors.white,
diff --git a/lib/pages/processing/processing_editor.dart b/lib/pages/processing/processing_editor.dart
index 6021019..6b3b5fc 100644
--- a/lib/pages/processing/processing_editor.dart
+++ b/lib/pages/processing/processing_editor.dart
@@ -171,7 +171,11 @@ class _ProcesingEditorState extends State<ProcesingEditor> {
             leading: new IconButton(
               icon:
                   new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
-              onPressed: () => Navigator.of(context).pop(),
+              onPressed: () {
+                showConfirmDialog(context, "back.button_confirm", () {
+                  Navigator.of(context).pop();
+                });
+              },
             ),
             shadowColor: Colors.transparent,
             backgroundColor: Colors.white,
diff --git a/lib/pages/profile/profile_currency_edit.dart b/lib/pages/profile/profile_currency_edit.dart
index 6d91664..6e8aeb6 100644
--- a/lib/pages/profile/profile_currency_edit.dart
+++ b/lib/pages/profile/profile_currency_edit.dart
@@ -59,7 +59,11 @@ class _ProfileCurrencyEditState extends State<ProfileCurrencyEdit> {
               size: 35,
               color: primaryColor,
             ),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
         ),
         body: Column(
diff --git a/lib/pages/profile/profile_edit.dart b/lib/pages/profile/profile_edit.dart
index 23f4a37..8cd33f8 100644
--- a/lib/pages/profile/profile_edit.dart
+++ b/lib/pages/profile/profile_edit.dart
@@ -74,7 +74,11 @@ class _ProfileEditState extends State<ProfileEdit> {
               size: 35,
               color: primaryColor,
             ),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
         ),
         body: Column(
diff --git a/lib/pages/rates/cargo_editor.dart b/lib/pages/rates/cargo_editor.dart
index a570b1d..59cf820 100644
--- a/lib/pages/rates/cargo_editor.dart
+++ b/lib/pages/rates/cargo_editor.dart
@@ -32,7 +32,7 @@ class _CargoEditorState extends State<CargoEditor> {
     if (widget.cargo != null) {
       _cargo = widget.cargo;
       _descController.text = _cargo.name;
-      _rateController.text = _cargo.rate.toString();
+      _rateController.text = _cargo.rate.toStringAsFixed(2);
     } else {
       _isNew = true;
     }
@@ -60,7 +60,11 @@ class _CargoEditorState extends State<CargoEditor> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: primaryColor,
           title: Text(AppTranslations.of(context).text("cargo.form.title")),
diff --git a/lib/pages/rates/cargo_type_list.dart b/lib/pages/rates/cargo_type_list.dart
index 4b4aa14..1e766c3 100644
--- a/lib/pages/rates/cargo_type_list.dart
+++ b/lib/pages/rates/cargo_type_list.dart
@@ -75,8 +75,8 @@ class _CargoTypeListState extends State<CargoTypeList> {
                               )));
                     },
                     child: Container(
-                      child: _row(cargo.name, "\$ " + cargo.rate.toString(),
-                          'per pound'),
+                      child: _row(cargo.name,
+                          "\$ " + cargo.rate.toStringAsFixed(2), 'per pound'),
                     ),
                   );
                 }),
diff --git a/lib/pages/rates/custom_editor.dart b/lib/pages/rates/custom_editor.dart
index 747716d..b97cd9f 100644
--- a/lib/pages/rates/custom_editor.dart
+++ b/lib/pages/rates/custom_editor.dart
@@ -33,7 +33,7 @@ class _CustomEditorState extends State<CustomEditor> {
     if (widget.custom != null) {
       _custom = widget.custom;
       _productController.text = _custom.productType;
-      _feeController.text = _custom.fee.toString();
+      _feeController.text = _custom.fee.toStringAsFixed(2);
     } else {
       _isNew = true;
     }
@@ -63,7 +63,11 @@ class _CustomEditorState extends State<CustomEditor> {
             icon: new Icon(
               CupertinoIcons.back,
             ),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: primaryColor,
           title:
diff --git a/lib/pages/rates/custom_list.dart b/lib/pages/rates/custom_list.dart
index 41946e0..cf24223 100644
--- a/lib/pages/rates/custom_list.dart
+++ b/lib/pages/rates/custom_list.dart
@@ -88,7 +88,7 @@ class _CustomListState extends State<CustomList> {
                     },
                     child: Container(
                       child: _row(
-                          custom.productType, "\$ " + custom.fee.toString()),
+                          custom.productType, "\$ " + custom.fee.toStringAsFixed(2)),
                     ),
                   );
                 }),
diff --git a/lib/pages/rates/discount_by_weight_editor.dart b/lib/pages/rates/discount_by_weight_editor.dart
index 018c942..487d4fa 100644
--- a/lib/pages/rates/discount_by_weight_editor.dart
+++ b/lib/pages/rates/discount_by_weight_editor.dart
@@ -62,7 +62,11 @@ class _DiscountByWeightEditorState extends State<DiscountByWeightEditor> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: primaryColor,
           title: Text(AppTranslations.of(context).text("discount.new")),
diff --git a/lib/pages/rates/shipment_rates.dart b/lib/pages/rates/shipment_rates.dart
index aa351a6..8b5c535 100644
--- a/lib/pages/rates/shipment_rates.dart
+++ b/lib/pages/rates/shipment_rates.dart
@@ -138,10 +138,12 @@ class _ShipmentRatesState extends State<ShipmentRates> {
                 color: Colors.grey,
               ),
               _row("Free delivery within Yangon \nfor shipments over",
-                  "${rate.freeDeliveryWeight}", "pounds"),
-              _row("Delivery fees", "\$ ${rate.deliveryFee}",
-                  "below ${rate.freeDeliveryWeight} pounds"),
-              _row("Volumetric Ratio", "${rate.volumetricRatio}",
+                  "${rate.freeDeliveryWeight.toStringAsFixed(2)}", "pounds"),
+              _row("Delivery fees", "\$ ${rate.deliveryFee.toStringAsFixed(2)}",
+                  "below ${rate.freeDeliveryWeight.toStringAsFixed(2)} pounds"),
+              _row(
+                  "Volumetric Ratio",
+                  "${rate.volumetricRatio.toStringAsFixed(2)}",
                   "in3 per pound"),
               Divider(
                 color: Colors.grey,
@@ -179,7 +181,8 @@ class _ShipmentRatesState extends State<ShipmentRates> {
   List<Widget> getCargoWidget(List<CargoType> cargos) {
     return cargos.map((cargo) {
       return Container(
-        child: _row(cargo.name, "\$ " + cargo.rate.toString(), 'per pound'),
+        child: _row(
+            cargo.name, "\$ " + cargo.rate.toStringAsFixed(2), 'per pound'),
       );
     }).toList();
   }
@@ -187,7 +190,7 @@ class _ShipmentRatesState extends State<ShipmentRates> {
   List<Widget> getCustonWidget(List<CustomDuty> customs) {
     return customs.map((c) {
       return Container(
-        child: _row(c.productType, "\$ " + c.fee.toString(), ''),
+        child: _row(c.productType, "\$ " + c.fee.toStringAsFixed(2), ''),
       );
     }).toList();
   }
@@ -197,7 +200,7 @@ class _ShipmentRatesState extends State<ShipmentRates> {
     return discounts.map((d) {
       return Container(
         child: _row("${d.weight.toStringAsFixed(2)} lb",
-            "\$ " + d.discount.toString(), ''),
+            "\$ " + d.discount.toStringAsFixed(2), ''),
       );
     }).toList();
   }
diff --git a/lib/pages/rates/shipment_rates_calculate.dart b/lib/pages/rates/shipment_rates_calculate.dart
index 7b7b3e4..9af0d95 100644
--- a/lib/pages/rates/shipment_rates_calculate.dart
+++ b/lib/pages/rates/shipment_rates_calculate.dart
@@ -2,6 +2,7 @@ import 'package:fcs/domain/entities/carton.dart';
 import 'package:fcs/domain/entities/cargo_type.dart';
 import 'package:fcs/domain/entities/rate.dart';
 import 'package:fcs/helpers/theme.dart';
+import 'package:fcs/pages/main/util.dart';
 import 'package:fcs/pages/rates/model/shipment_rate_model.dart';
 import 'package:fcs/pages/widgets/display_text.dart';
 import 'package:fcs/pages/widgets/input_text.dart';
@@ -46,7 +47,7 @@ class _ShipmentRatesCalState extends State<ShipmentRatesCal> {
     _lengthController.text = '12';
     _widthController.text = '12';
     _heightController.text = '12';
-    _actualWeightCtl.text = "10";
+    _actualWeightCtl.text = "10.00";
     _calShipmentWeight();
   }
 
@@ -141,7 +142,11 @@ class _ShipmentRatesCalState extends State<ShipmentRatesCal> {
           centerTitle: true,
           leading: new IconButton(
             icon: new Icon(CupertinoIcons.back, color: primaryColor),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: Colors.white,
           shadowColor: Colors.transparent,
@@ -163,7 +168,7 @@ class _ShipmentRatesCalState extends State<ShipmentRatesCal> {
                   LocalText(context, "rate.delivery_fee",
                       color: primaryColor, fontSize: 16),
                   Text(
-                    ':\$ $_deliveryFee',
+                    ':\$ ${_deliveryFee.toStringAsFixed(2)}',
                     style: TextStyle(
                       color: primaryColor,
                       fontSize: 16,
diff --git a/lib/pages/rates/shipment_rates_edit.dart b/lib/pages/rates/shipment_rates_edit.dart
index 6fa144d..1595166 100644
--- a/lib/pages/rates/shipment_rates_edit.dart
+++ b/lib/pages/rates/shipment_rates_edit.dart
@@ -38,8 +38,8 @@ class _ShipmentRatesEditState extends State<ShipmentRatesEdit> {
     Rate rate = shipmentRateModel.rate;
 
     _minWeight.text = rate.freeDeliveryWeight?.toStringAsFixed(2) ?? "";
-    _deliveryFee.text = rate.deliveryFee?.toString() ?? "";
-    _volumetricRatio.text = rate.volumetricRatio?.toString() ?? "";
+    _deliveryFee.text = rate.deliveryFee?.toStringAsFixed(2) ?? "";
+    _volumetricRatio.text = rate.volumetricRatio?.toStringAsFixed(2) ?? "";
   }
 
   @override
@@ -73,7 +73,11 @@ class _ShipmentRatesEditState extends State<ShipmentRatesEdit> {
             icon: new Icon(
               CupertinoIcons.back,
             ),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           backgroundColor: primaryColor,
           title: Text(AppTranslations.of(context).text("rate.edit.title")),
diff --git a/lib/pages/receiving/receiving_editor.dart b/lib/pages/receiving/receiving_editor.dart
index 305ab6a..78bb9a3 100644
--- a/lib/pages/receiving/receiving_editor.dart
+++ b/lib/pages/receiving/receiving_editor.dart
@@ -149,7 +149,11 @@ class _ReceivingEditorState extends State<ReceivingEditor> {
             leading: new IconButton(
               icon:
                   new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
-              onPressed: () => Navigator.of(context).pop(),
+              onPressed: () {
+                showConfirmDialog(context, "back.button_confirm", () {
+                  Navigator.of(context).pop();
+                });
+              },
             ),
             shadowColor: Colors.transparent,
             backgroundColor: Colors.white,
diff --git a/lib/pages/shipment/shipment_editor.dart b/lib/pages/shipment/shipment_editor.dart
index 5094612..f3c6aa6 100644
--- a/lib/pages/shipment/shipment_editor.dart
+++ b/lib/pages/shipment/shipment_editor.dart
@@ -165,7 +165,11 @@ class _ShipmentEditorState extends State<ShipmentEditor> {
               CupertinoIcons.back,
               color: primaryColor,
             ),
-            onPressed: () => Navigator.of(context).pop(),
+            onPressed: () {
+              showConfirmDialog(context, "back.button_confirm", () {
+                Navigator.of(context).pop();
+              });
+            },
           ),
           shadowColor: Colors.transparent,
           backgroundColor: Colors.white,
diff --git a/lib/pages/staff/staff_editor.dart b/lib/pages/staff/staff_editor.dart
index c21bd1d..1cad728 100644
--- a/lib/pages/staff/staff_editor.dart
+++ b/lib/pages/staff/staff_editor.dart
@@ -171,10 +171,13 @@ class _StaffEditorState extends State<StaffEditor> {
           appBar: AppBar(
             centerTitle: true,
             leading: new IconButton(
-              icon:
-                  new Icon(CupertinoIcons.back, color: primaryColor, size: 30),
-              onPressed: () => Navigator.of(context).pop(),
-            ),
+                icon: new Icon(CupertinoIcons.back,
+                    color: primaryColor, size: 30),
+                onPressed: () {
+                  showConfirmDialog(context, "back.button_confirm", () {
+                    Navigator.of(context).pop();
+                  });
+                }),
             shadowColor: Colors.transparent,
             backgroundColor: Colors.white,
             title: LocalText(
diff --git a/lib/pages/term/term_edit.dart b/lib/pages/term/term_edit.dart
index 5a4732a..571b3e0 100644
--- a/lib/pages/term/term_edit.dart
+++ b/lib/pages/term/term_edit.dart
@@ -76,7 +76,11 @@ class _TermEditState extends State<TermEdit> {
                 color: primaryColor,
                 size: 30,
               ),
-              onPressed: () => Navigator.of(context).pop(),
+              onPressed: () {
+                showConfirmDialog(context, "back.button_confirm", () {
+                  Navigator.of(context).pop();
+                });
+              },
             ),
             shadowColor: Colors.transparent,
             backgroundColor: Colors.white,