Introduction: Keko Varicon is one of the world's leading companies in manufacturing overvoltage protection and EMI suppression components. The core product is a varistor. KEKO VARICON currently manages two ceramic technologies: dry powder pressing and casting molding. The first one is used to produce all disk components and high-energy varistors, while the second one is used to produce all multi-layer components - varistors. KEKO VARICON also manages two assembly technologies: radial lead assembly and thermoplastic packaging. The first one is used for all through-hole components, while the second one is used for packaging SMD varistors. The main application industries include automotive, environmental, passive components, medical, and telecommunications.