My company specializes in producing all kinds of specifications hollow reactance series products, product range voltage from the 0-35KV, capacity from 0-3500KVAR, commonly used in reactive power compensation and harmonic filtering, such as limiting the occasion, I plant the production of hollow reactor using multilayer around the cylindrical structure of the parallel. And encapsulation between the guiding strips separated to form an airway ventilation, good heat dissipation. At the same time, the small circular cross-section wire winding strands of equality, eddy current and magnetic flux leakage loss is small, in insulation, we use each wire and the surface of the polyester film multilayer half stack package, with very high dielectric strength, winding impregnated with epoxy insulation glue glass fiber tightly wrapped, through high temperature curing to form a rigid body, the utility model has the advantages of high mechanical strength, can withstand short-circuit current impact without damage, surface coil with ultraviolet radiation, ozone resistant protective layer, anti - aging, resistant to all kinds of bad weather.