Quality infrastructure is the unsung hero of trade; it is essential for market access whilst promoting essential regulatory objectives such as safety, quality and sustainability in industrial goods. But it is not well known by the general public. This publication provides a baseline understanding of the different elements of quality infrastructure and some insight as to how this affects trade flows. The main target audience is operators involved in international trade. It can serve as a resource when explaining these requirements to colleagues or supervisors. It can also be useful for experts and government officials already familiar with certain elements of quality infrastructure but seeking more information on the other elements.