The General Administration of market supervision and administration of China and the National Standardization Administration of the people's Republic of China issued GB 24427-2021 "restriction requirements for mercury, cadmium and lead content in zinc negative primary cells", replacing GB 24427-2009 "restriction requirements for mercury, cadmium and lead content in alkaline and non alkaline zinc manganese dioxide batteries" and GB 24428-2009 "zinc silver oxide, zinc air Requirements for limiting mercury content in zinc manganese dioxide button cells.