Trankey Micro-Tech Corp.is one of the branch from Zing Ear Group who invests this company for mainly producing Circuit Breakers and partly producing electrical switches. Since 1991, Zing Ear Group has transferred all Circuit Breakers production to Trankey Micro-Tech Corp. Therefore Trankey Micro-Tech owns 10 years experience of Circuit Breakers manufacturing. Products from Trankey have been approved by UL,CAS and VDE (to be approved soon)