Harald Lüling

Burg-Wächter KG manufactures and supplies locking and security devices. It products include locks and bolts, electronic door locking systems, door technology, measuring techniques, cash boxes and key boxes, letter boxes and video security. The company was founded in 1920 by Alfred Lüling and is headquartered in Wetter, Germany.

SECU Sicherheitsprodukte GmbH is a German company that specializes in electronic and mechanical high-security closure technology. The private company is based in Meinerzhagen, Germany. The company's products include electronic and mechanical high safety locks, closures for safe or high-security doors, and video security technology. The CEOs of the company are Dietmar Lüling, Harald Lüling, Reinhard Lüling.