Page 2 in the "Assessing and Managing Modern Slavery Risk in BioMarin's Supply Chain" section: "BioMarin does not directly source any materials from Tier 3 countries and although BioMarin contracts with companies in two Tier 2 countries (China and Switzerland), each of these suppliers produce active pharmaceutical ingredients for BioMarin and therefore are closely monitored for many aspects of the production process including the caliber and training of the personnel employed."