Thermal printer: advantages: low noise, fast speed, clear print, easy to use;
Disadvantages: Cannot perform duplex printing, printing paper can not be saved permanently;
Applicable: Suitable for printing documents that do not need to be saved for a long time.
Needle printer: advantages: can be duplex printing, printing paper can be permanently saved;
Disadvantages: loud noise, slow speed, unclear printwriting, and inconvenient use;
Applicable: Applicable to printing invoices and other documents that need to be saved for a long time.