What would ceramics be like without magnetic shielding? What is magnetic shielding?

Magnetic shielding refers to isolating useless magnetic forces, isolating the magnetic forces entering the inductor from the outside, and also preventing the magnetic forces inside the inductor from affecting the outside. The company's power inductor, there are two kinds of magnetic shielding, respectively, with ferrite material around the inductor internal electrode magnetic shield (laminated type) and with magnetic powder containing resin around the winding magnetic shield (wire-wound type).