The main board shielding cover of the circuit, what is the role of the shielding cover in the toroidal transformer + 15 years of shielding cover manufacturers

The technicians who produce the hardware of the circuit board shielding cover said that the shielding cover is also called magnetic shielding. It is generally made of magnetically conductive materials. The better one is permalloy, but it is expensive. Generally speaking, magnetically conductive silicon steel strips are used. Or made of iron, what role does the shielding cover play in the toroidal transformer? Xiaoshuo will come to understand with you: The toroidal transformer with shielding cover has small magnetic leakage and low interference. For power amplifier transformers, electromagnetic interference can be largely eliminated. The sound quality is quite pure and noise-free. It is mainly used for magnetic shielding, effectively reducing the interference of magnetic field on circuits and electronic components. Hardware, 15 years of dedicated circuit board shielding cover, 20,000+ sets of mold custom processing and production experience, monthly 100+ sets of mold processing capacity, daily production capacity of 3 million punching times, stamping accuracy up to 0.01mm, and 16 quality inspections strictly. It can quickly solve time-critical problems for you, solve stamping accuracy problems, and solve mass production quality problems. Choose, choose rest assured!