Ensure the factory complies with REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) standards, particularly for plasticizers and dyes, to ensure the products are non-toxic and odorless. For the US market, products should be Prop 65 compliant. Request ISO 9001 certification to confirm the factory's quality management system. If the organizers are intended for children's rooms, they must meet ASTM or EN71 safety requirements regarding small parts and chemical flammability.