Shielding materials and equipment are specialized solutions designed to block, absorb, or redirect electromagnetic interference (EMI) and radio-frequency interference (RFI) across a broad spectrum of frequencies, from low-frequency magnetic fields to high-frequency microwaves. These systems combine advanced materials science with precision engineering to ensure signal integrity, protect sensitive electronics, and comply with international electromagnetic compatibility (EMC) regulations. Key components include conductive polymers infused with carbon nanotubes for flexible shielding, amorphous metal alloys for high-permeability magnetic absorption, and multi-layered composites like graphene-aluminum hybrids for extreme environments. Their performance is validated through standards such as MIL-STD-188-125 for military applications and IEC 61000-4-21 for industrial EMC testing.