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並前往https://www.nea.gov.sg/docs/default-source/our-services/guidelines-on-use-of-chlorine-containing-chemicals-for-disinfection-of-swimming-pools.pdf

guidelines on the use of chlorine-containing chemicals for - NEA

Chlorine -containing chemicals are commonly used in swimming pools as part of the routine water treatment. While such chemicals help to disinfect the water, ...

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