Magnetic Shield (formerly known as Perfection Mica Company) is a company that designs, manufactures, and supplies magnetic field shielding materials. Its products include shielding sheets, plates, rods, foils, conduits, cans, lids, etc. The company provides fabrication, prototyping, quality assurance, testing, evaluation, and annealing services. Magnetic Shield caters to aerospace, defense, medical, transportation, energy, and other sectors.