Half-hole plate is mainly used on modular PCB, such as RF, Bluetooth, wifi, (2G, 3G, 4G, 5G) module, positioning module, etc. 5G standards come out and link up in various fields. Now it has been widely used in communications, the Internet of Things, automotive electronics, industrial control, military industry, etc., but its difficulty lies in the control of the half-hole diameter and the design and manufacturing process of the hole ring. This kind of PCB with a whole row of semi-metallized holes on the edge of the board is characterized by a relatively small hole diameter, which is mostly used on the carrier board. As a sub-board of a motherboard, through these semi-metallized holes, it is welded to the motherboard and the pins of components.