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See Chinese contents: GB/T 1733-1993 GB/T 1733-1993: Determination of resistance to water of films
This Standard specifies the methods for determining the water resistance of paint films, including two methods: the water immersion test method and the immersion in boiling water test method. After reaching the specified test time, the water resistance of the paint film is expressed by the phenomenon of the surface change of the paint film.
