The core of medical equipment is PCB. PCBs in the medical industry are highly specialized to adapt to the unique limitations of medical equipment. In many medical applications, small packages are required to meet the size requirements of implants or emergency room monitors. Therefore, medical PCBs are often special high-density interconnect PCBs, also known as HDI PCBs. Medical PCBs can also be made of flexible substrates, which allow the PCB to bend during use, which is essential for both internal and external medical equipment.