Mariendal El-Teknik A/S is a Danish electrical contractor with a certified fire practice working out of Aalborg in North Denmark. DBI approves it for automatiske brandalarmanlæg, varslingsanlæg and termisk brandventilation — 3 current approvals, 232.433, 024.001, 027T.001 — under DBI Retningslinje 232, DBI Retningslinje 24 and DBI Retningslinje 27. Its fire-alarm approval names 12 panel platforms — a Danish approval scopes the firm and the systems together, not the firm alone. DBI certifies the named individual as well as the company, and 2 certified people are listed against this approval.