Leif Nielsen A/S is a Danish installer working out of Vejby in Capital Region. DBI approves it for automatiske brandalarmanlæg, varslingsanlæg and termisk brandventilation — 3 current approvals, 232.550, 024.109, 027T.106 — under DBI Retningslinje 232, DBI Retningslinje 24 and DBI Retningslinje 27. Its fire-alarm approval is scoped to 15 named panel platforms, which is an unusually broad installed base to be certified across: a Danish approval covers the firm and the systems together, never the firm alone. DBI certifies the named individual as well as the company, and 1 certified person is listed against this approval.