diff --git a/sane/scanner.cpp b/sane/scanner.cpp
index ae5f2e7..69489e3 100644
--- a/sane/scanner.cpp
+++ b/sane/scanner.cpp
@@ -364,7 +364,7 @@ bool scanner::is_belong_serial(int vid, int pid, SCANNERID serial)
 		{
 			if (GET_SCANNER_PID(serial) == 0x100)
 			{
-				return pid == 0x100 || pid == 0x139 ;
+				return pid == 0x100 || pid == 0x139;
 			}
 			else if (GET_SCANNER_PID(serial) == 0x200)
 			{
@@ -378,6 +378,11 @@ bool scanner::is_belong_serial(int vid, int pid, SCANNERID serial)
 			{
 				return pid == 0x400 || pid == 0x402 || pid == 0x439;
 			}
+			else if (GET_SCANNER_PID(serial) == 0x138 ||
+				GET_SCANNER_PID(serial) == 0x238 ||
+				GET_SCANNER_PID(serial) == 0x303 ||
+				GET_SCANNER_PID(serial) == 0x404)	// OEM_CANGTIAN
+				return true;
 		}
 	}
 	else if (vid == PRODUCT_VENDOR_HG1)
@@ -2837,7 +2842,7 @@ void init_log(void)
 		fseek(g_file_, 0, SEEK_END);
 		if (ftell(g_file_))
 		{
-			std::wstring sep(L"\r\n\r\n\r\n=================================================\r\n");
+			std::wstring sep(L"\r\n\r\n\r\n=======================================================\r\n");
 			fwrite(sep.c_str(), 2, sep.length(), g_file_);
 		}
 		else