... prive, high quality LDR0.3-0.4-D Electric Boiler 1: This boiler take the electric power as an energy, through the ... , high thermal efficiency , small volume , no noise, can use the module type to heat, saves the energy, easy installs and operate ... electric cable, high insulation grade ,good radiates , durable.3: The boiler controller uses the advanced man-machine contact surface computer controller ...