Microwave/Hybrid High Frequency , FR4 Double/Multi-Layer , 1~3+N+3 HDI?Anylayer HDI , Rigid-Flex , Blind Buried, Blind Slot , Backdrilled ,IC ,Heavy Copper Board and etc. PCB apply for Industry 4.0, Communication, Industrial Control, Digital, Power supply, Computer, Automotive, Medical, Aerospace, Instruments, Military, Interne and other fields.