DIELEC and JIATE once were respectively the Hipotronics service centre in China and it�s manufacture partner. They were spontaneously domestic leaders to produce the product series like digital KVM, HV series resonant and partial discharge test system. Constantly they gained supports from the specialists of universities and institutes then more new products of their own had been developed. For example, the PD detectors; new type of Impulse test system, high performance shielded room, CTT, intelligent controls of cables, power apparatus and the Lab. Of power system and others.