Electrolytic copper, the crude copper (copper 99%) in advance made of thick plate as the anode, made of copper as the cathode sheet to sulfuric acid (H2SO4) and copper sulfate (CuSO4) mixture as the electrolyte. After electrification, copper from the anode dissolved into copper ions (Cu) to move to the cathode, to reach the cathode after the electrons in the cathode precipitation of pure copper.