One is the electrolysis of salt and water, commonly known as electrolysis, and the representative figures are: DCW, Water God and so on. In the absence of stabilizer, it is generally the type currently used in production.
One is non-electrolytic weak acid hypochlorous acid water, which is represented by CELA. Without any stabilizer, the shelf life can reach 18 months.
Look at your own needs and choose the equipment that suits you.