MAI is straightforward, so firstly, visit the official MAI website. Click on the trader option and also locate the "Sign up" section. You will be guided through a quick registration process, where you can create a profile highlighting your skills and experience. Select the category that best represents your expertise, i.e. Fabricator, stonemason, a contractor specialising in fireplace installations or choose multiple categories if your skillset encompasses various aspects of the stone fireplace creation.