The Joint Council for Molding & Hobby Materials is an association of producers, importers and retailers of hobby materials in Denmark. They have drawn up a number of requirements for the products, which go beyond the statutory requirements. The purpose is that the products sold as hobby materials should not unduly affect the health and well-being of children and young people and the environment in general.

The A mark means that the product complies with the strict safety requirements set by the Joint Council for Molding & Hobby Materials.