Small key toys, especially those intended for children, must strictly adhere to international safety regulations. For the US market, compliance with ASTM F963 and CPSIA (Consumer Product Safety Improvement Act) is mandatory, focusing on lead content and phthalates. For the EU market, products must carry the CE mark and comply with EN71 Parts 1, 2, and 3, which cover mechanical properties, flammability, and chemical migration. Always ensure the supplier provides a Children’s Product Certificate (CPC) or a Declaration of Conformity (DoC).