Semi-Anechoic Chambers can be categorized by size and functionality into 3m method Semi-Anechoic Chambers, 5m method Semi-Anechoic Chambers, 10m method Semi-Anechoic Chambers, CISPR25 Semi-Anechoic Chambers, and Military Standard Semi-Anechoic Chambers. To ensure the accuracy of electromagnetic compatibility tests, there are supporting shielding rooms, which are functionally divided into control rooms, power amplifier rooms, load rooms, and conduction rooms.