... , easy to assemble, connect in one face or two faces or side face, 3, 6,12,24,36,72, ... aluminum+silver. 5) Very long life, 10 years or longer is possible.6) Very high reliable, over ... If customer need the PTC with wire, insulator, or shell. please select other types manufactured by our company ... . 9) Parallel connection is necessary for two or more PTC connection.10) The steady state power ...