diff --git a/src/main/java/com/casic/common/general/IMEIFrame.java b/src/main/java/com/casic/common/general/IMEIFrame.java
index 356feda..db08dd6 100644
--- a/src/main/java/com/casic/common/general/IMEIFrame.java
+++ b/src/main/java/com/casic/common/general/IMEIFrame.java
@@ -18,6 +18,11 @@
     String iccid;
 
     @Override
+    public String getDevTypeName() {
+        return "Methane";
+    }
+
+    @Override
     public String toString() {
         return "{" +
                 MESSAGE_TYPE_DESCRIPTION + ":" + MESSAGE_TYPE_STRING + ";" +