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The 3-year transition period ends on December 14, 2025, for updating product classifications, Safety Data Sheets (SDSs), and labels to meet the amended Hazardous Products Regulations (HPR). Starting December 15, 2025, all hazardous products must have hazard classifications, SDSs, and labels (if applicable) that fully comply with the amended HPR. In addition, any SDSs or labels submitted with claims for exemption under the Hazardous Materials Information Review Act on or after