Due to the small size of surface mount components, higher-density assembly can be achieved on PCBs.
2. High reliability:
SMT technology reduces the pin connection in traditional plug-in processes, thereby reducing product failure rates.
3. Low cost:
SMT production lines with a high degree of automation can achieve large-scale production and reduce production costs.
4. Miniaturization:
 Surface mount components are small in size, which helps miniaturize electronic products.
5. Automation:
SMT PCB assembly line usually use automated equipment, such as SMT stencil printers, placement machines, reflow ovens, etc., to improve production efficiency.

•  Printing machine: used to print solder paste or adhesive to the specified position of the PCB.
• Mounting machine: accurately mounts surface mount components on the PCB.
• Reflow oven: melts the solder paste by heating to achieve welding of components and PCB.
• Inspection equipment: used to detect the quality of the assembled PCB, such as automatic optical inspection (AOI) and X-ray inspection.
• Rework equipment: used to repair defects that occur during the production process.