what is purpose of relay - China Manufacturers, Factory, Suppliers

We have probably the state-of-the-art output equipment, experienced and qualified engineers and workers, recognized good quality manage systems plus a friendly skilled income workforce pre/after-sales support for what is purpose of relay, Mccb 125 Ampere , 38a Contactor , 6ka Mcb , All these products are manufactured in our factory located in China. So we can guarantee our quality seriously and availably. Within these four years we sell not only our products but also our service to clients throughout the world.