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See Chinese contents: GB/T 38009-2019 GB/T 38009-2019: Spectacle frames -- Requirement and method for the detection of nickel release
This Standard specifies the requirement for the nickel release from the metal parts of metal and combination frames, the method of wear simulation, the measurement of nickel release, calculations, and test report. This Standard applies to those spectacle frames which, if produced with materials or surface treatments containing nickel.
