Material: We use high quality crgo steels with low iron-loss and high permeability in thickness of 0.05mm, 0.08mm, 0.23mm, 0.27mm, 0.3mm and 0.35mm. Characteristic: The two halves put together and come into a closed flux path as an open structure. So bobbin and core can be produced separately, afterward put the core in bobbin, and then the production time can be reduced. Application: Various specifications c core are widely used in 50hz and 400hz transformers, current transformers, reactors, chokes and other magnetic components of electronic equipment.