The high frequency microwave PCB develops extremely quick, especially in communications, medical service, military, automobile, computer, instrument and other relative fields. Many years later, it is believed that high frequency microwave PCB will take 15% of total PCB worldwide, so many PCB manufactures from Taiwan, Korea, Europe, America, Japan and etc, all make a plan aiming at this direction. Suppliers from Europe and America, such as Rogers, Arlon, Taconic, Metclad are coming into our big potential market in China, searching agents and teaching relative technique.