SMT is a surface mount technology (abbreviated as surface mount technology), and it is the most popular technology and process in the electronic assembly industry at present.

AI-automatic axial inserter and Ri- automatic radial inserter (vertical insertion)

AI and RI are plug-in methods. AI is a horizontal plug-in machine, which is suitable for some electrical components lying on PCB (the pins of the components are flat), such as capacitors, transistors, diodes, resistors, fuses and so on. RI is a vertical plug-in machine, which is suitable for electrical components standing on PCB (component pins are vertical).