diff --git a/pkg/collector/handler_dcg.go b/pkg/collector/handler_dcg.go
index c0d645c..426bfd9 100644
--- a/pkg/collector/handler_dcg.go
+++ b/pkg/collector/handler_dcg.go
@@ -43,7 +43,7 @@ func (h *DcgHandler) IsMetricVaild(m *metric.TcmMetric) bool {
 }
 
 func NewDcgHandler(cred common.CredentialIface, c *TcProductCollector, logger log.Logger) (handler ProductHandler, err error) {
-	handler = &tdmqHandler{
+	handler = &DcgHandler{
 		baseProductHandler: baseProductHandler{
 			monitorQueryKey: DcgInstanceidKey,
 			collector:       c,
diff --git a/pkg/collector/handler_vpngw.go b/pkg/collector/handler_vpngw.go
index 28fcdc9..504d7b7 100644
--- a/pkg/collector/handler_vpngw.go
+++ b/pkg/collector/handler_vpngw.go
@@ -43,7 +43,7 @@ func (h *VpngwHandler) IsMetricVaild(m *metric.TcmMetric) bool {
 }
 
 func NewVpngwHandler(cred common.CredentialIface, c *TcProductCollector, logger log.Logger) (handler ProductHandler, err error) {
-	handler = &tdmqHandler{
+	handler = &VpngwHandler{
 		baseProductHandler: baseProductHandler{
 			monitorQueryKey: VpngwInstanceidKey,
 			collector:       c,
diff --git a/pkg/collector/handler_vpnx.go b/pkg/collector/handler_vpnx.go
index aaa0ffd..e156842 100644
--- a/pkg/collector/handler_vpnx.go
+++ b/pkg/collector/handler_vpnx.go
@@ -43,7 +43,7 @@ func (h *VpnxHandler) IsMetricVaild(m *metric.TcmMetric) bool {
 }
 
 func NewVpnxHandler(cred common.CredentialIface, c *TcProductCollector, logger log.Logger) (handler ProductHandler, err error) {
-	handler = &tdmqHandler{
+	handler = &VpnxHandler{
 		baseProductHandler: baseProductHandler{
 			monitorQueryKey: VpnxInstanceidKey,
 			collector:       c,