Security and stability, environmental YLS only with salt and electricity, to avoid the danger that will happen transport, storage and direct contact with chlorine, chlorine dioxide, ozone and other sectors, to protect the operator and the surrounding people's lives and health are not threatened. YLS equipment generates corrosive disinfectant is even weaker than ordinary tap water, even if accidentally leak will be in the degradation of salt and water in a short time, no environmental pollution. If the physical contact of the operator to rinse with water to clean the skin without any harm