Norboa has strict requirements for the treatment of water quality, and it is a good industry industry that uses softened water to supply water to the pool's specialized baby swimming institutions, which are only able to inject water into the pool after three successive filtration and two-way bactericide procedures, and re-film every 20 minutes, with water flowing into the pool every second being new and filtrated, which is currently used internationally for the use of mineral water, double-filtration equipment to ensure that water quality is clean and that water quality requirements meet drinking water standards. Norboa swims away from swimming rings that are not conducive to the healthy development of the baby, and introduces from abroad, in accordance with the early development characteristics of the baby and the early development of the child, eu12. 138-1: 2008, as1900-2002 australia is familiar with water and swimming teaching, with a standard double standard of floating aids to...