Our company is a professional manufacturer of iron cores. We are specializing in developing, producing and selling toroidal cores, oval cores, transformer iron cores, silicon steel iron cores and mini-cores, which are widely used in electronic transformers, power transformers, mutual inductance transformers, sensors, voltage regulators, voltage regulators, computer powers, leakage protection switches, welding machines, magnetic amplifiers and instruments. Our products are made of silicon steel material with thickness of 0.23 ~ 0.50mm.