Polytronics Technology Corp. manufactures and sells polymeric positive temperature coefficient (PPTC) products. It provides over current protection devices, such as EVERFUSE PPTC devices, current limiting module, surface mount fuses, electronic fuses, and current sensing resistors; over voltage protection devices, which includes transient voltage suppressor, thyristor surge suppressor, electrostatic discharge protector, metal oxide varistor, and gas discharge tube; and thermal management solutions, including thermally conductive board, thermally setable pad, thermally radiation material, and thermal conductive ink. The company also engages in the production and sale of potentiometers, discrete semiconductor devices, and other resistive elements. Its products are used in electronic device protection, energy storage systems, battery protection, industrial automation, household appliances, automotive electronic systems, and security products. Polytronics Technology Corp. was incorporated in 1997 and is based in Hsinchu City, Taiwan.