Greattong provides from high frequency, high speed, high density PCB designing, fabrication, for different demand of customer, mainly for the domestic and foreign correspondences, including medical service, the industrial control, the network, astronautics, the computer, the war industry electron and so on, which is engaged in the scientific research development as well as the production unit service. Greattong altogether invests RMB38,000,000 in PCB production line and monthly yield can amount to 300,000 square feet for fabricating 2 to 28 layers PCB. The company has 100 specialized engineers, administrative people and 400 well-trained technical staffs. The company passed ISO9001:2000, ISO/TS16949:2002 certification and ISO14001:2004 authentication as well as through American UL authentication.