Product Description: Multilayer PCB is a type of printed wiring circuit board with multi-layer structure. It is usually made of FR-4 material with a Thermal Grade (TG) of 150-170, and is also available in aluminum and flexible material. The board thickness varies from 0.2mm to 3.2mm, and the minimum hole size is 0.2mm. The minimum line space is 3mil. The multilayer PCB can be shipped via air, sea or express. This type of printed wiring circuit board has been widely used in