GB 31604.49-2016 National food safety standard Determination of arsenic, cadmium, chromium and lead in food contact materials and products and determination of migration of arsenic, cadmium, chromium, nickel, lead, antimony and zinc
2016GB 31604.49-2016 National food safety standard Determination of arsenic, cadmium, chromium and lead in food contact materials and products and determination of migration of arsenic, cadmium, chromium, nickel, lead, antimony and zinc