diff --git a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/LjDeliver/DaCangFactory.cs b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/LjDeliver/DaCangFactory.cs
index aa218d1..5f72571 100644
--- a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/LjDeliver/DaCangFactory.cs
+++ b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/LjDeliver/DaCangFactory.cs
@@ -98,7 +98,7 @@ namespace Mesnac.Action.ChemicalWeighing.LjDeliver
                     new DaCangValue()
                     {
                         volume = 700,
-                        Density = 0.64f
+                        Density = 0.3f
                     }
                 },
                 {
@@ -106,7 +106,7 @@ namespace Mesnac.Action.ChemicalWeighing.LjDeliver
                     new DaCangValue()
                     {
                         volume = 700,
-                        Density = 0.65f
+                        Density = 0.3f
                     }
                 },
                 {
@@ -114,7 +114,7 @@ namespace Mesnac.Action.ChemicalWeighing.LjDeliver
                     new DaCangValue()
                     {
                         volume = 700,
-                        Density = 0.69f
+                        Density = 0.3f
                     }
                 },
                 {
@@ -122,7 +122,7 @@ namespace Mesnac.Action.ChemicalWeighing.LjDeliver
                     new DaCangValue()
                     {
                         volume = 700,
-                        Density = 0.77f
+                        Density = 0.569f
                     }
                 },
                 {