diff --git a/app/scanner2/mainwindow.cpp b/app/scanner2/mainwindow.cpp
index 781a2afe..460215a6 100644
--- a/app/scanner2/mainwindow.cpp
+++ b/app/scanner2/mainwindow.cpp
@@ -201,7 +201,7 @@ MainWindow::MainWindow(const QString& appLang, QWidget *parent)
     ui->toolBar->addSeparator();
     ui->toolBar->addAction(ui->act_help);
 
-#if defined (OEM_ZHONGJING) || defined (OEM_NEUTRAL)
+#if defined (OEM_ZHONGJING) || defined (OEM_NEUTRAL) || defined (OEM_CANGTIAN)
     m_menu_language = new QMenu(tr("menu_language"));
     m_act_simpCN = new QAction(tr("act_simpCN"),nullptr);
     m_act_tradCN = new QAction(tr("act_traCN"),nullptr);
@@ -3321,6 +3321,8 @@ void MainWindow::on_act_help_triggered()
         filename = QApplication::applicationDirPath() + "/LanxumScan_App_Help_manual.pdf";
     #elif defined(OEM_CANGTIAN)
         filename = QApplication::applicationDirPath() + "/CumtennScan_App_Help_manual.pdf";
+        if (m_currLang == "english")
+            filename = QApplication::applicationDirPath() + "/CumtennScan_App_Help_manual_EN.pdf";
     #elif defined(OEM_ZHONGJING)
         filename = QApplication::applicationDirPath() + "/MicrotekScan_App_Help_manual.pdf";
         if (m_currLang == "english")
@@ -3350,6 +3352,8 @@ void MainWindow::on_act_help_triggered()
         filename = QApplication::applicationDirPath() + "/../../entries/help/LanxumScan_App_Help_manual.pdf";
 #elif defined(OEM_CANGTIAN)
         filename = QApplication::applicationDirPath() + "/../../entries/help/CumtennScan_App_Help_manual.pdf";
+        if (m_currLang == "english")
+            filename = QApplication::applicationDirPath() + "/../../entries/help/CumtennScan_App_Help_manual_EN.pdf";
 #elif defined(OEM_ZHONGJING)
         filename = QApplication::applicationDirPath() + "/../../entries/help/MicrotekScan_App_Help_manual.pdf";
         if (m_currLang == "english")
@@ -3378,6 +3382,8 @@ void MainWindow::on_act_help_triggered()
         filename = QApplication::applicationDirPath() + "/../doc/LanxumScan_App_Help_manual.pdf";
 #elif defined(OEM_CANGTIAN)
         filename = QApplication::applicationDirPath() + "/../doc/CumtennScan_App_Help_manual.pdf";
+        if (m_currLang == "english")
+            filename = QApplication::applicationDirPath() + "/../doc/CumtennScan_App_Help_manual_EN.pdf";
 #elif defined(OEM_ZHONGJING)
         filename = QApplication::applicationDirPath() + "/../doc/MicrotekScan_App_Help_manual.pdf";
         if (m_currLang == "english")
@@ -3525,13 +3531,13 @@ void MainWindow::on_act_about_triggered()
     QString title = tr("about %1").arg(windowTitle());
     QString content;
     content += tr("<p>DriverVer: %1</p>").arg(QString::fromLocal8Bit(version));
+    QString appLang = getCfgValue("global", "language", QString("chinese"));
 
 #if defined(OEM_NEUTRAL)
     QMessageBox::about(this, title, content);
 #else
 
     #if defined(OEM_ZHONGJING)
-        QString appLang = getCfgValue("global", "language", QString("chinese"));
         if (appLang == "chinese")
         {
             content += tr("<p>Vendor: %1</p>").arg(QString::fromStdWString(COMPANY_NAME));
@@ -3555,6 +3561,21 @@ void MainWindow::on_act_about_triggered()
             content += tr("<p>Company telephone: %1</p>").arg(QString::fromStdWString(BRAND_COMPANY_TEL_TRADCN));
             content += tr("<p>Company website: <a href=\"%1\">%1</a></p>").arg(QString::fromStdWString(BRAND_COMPANY_URL_EN));
         }
+    #elif defined (OEM_CANGTIAN)
+        if (appLang == "chinese")
+        {
+            content += tr("<p>Vendor: %1</p>").arg(QString::fromStdWString(COMPANY_NAME));
+            content += tr("<p>Copyright: %1</p>").arg(QString::fromStdWString(BRAND_COPYRIGHT));
+            content += tr("<p>Company website: <a href=\"%1\">%1</a></p>").arg(QString::fromStdWString(BRAND_COMPANY_URL));
+            content += tr("<p>Company address: %1</p>").arg(QString::fromStdWString(BRAND_COMPANY_ADDRESS));
+        }
+        else if (appLang == "english")
+        {
+            content += tr("<p>Vendor: %1</p>").arg(QString::fromStdWString(COMPANY_NAME_EN));
+            content += tr("<p>Copyright: %1</p>").arg(QString::fromStdWString(BRAND_COPYRIGHT_EN));
+            content += tr("<p>Company website: <a href=\"%1\">%1</a></p>").arg(QString::fromStdWString(BRAND_COMPANY_URL));
+            content += tr("<p>Company address: %1</p>").arg(QString::fromStdWString(BRAND_COMPANY_ADDRESS_EN));
+        }
     #else
         content += tr("<p>Vendor: %1</p>").arg(QString::fromStdWString(COMPANY_NAME));
         content += tr("<p>Copyright: %1</p>").arg(QString::fromStdWString(BRAND_COPYRIGHT));