- GFK-Service GbR - Alarmanlagen & CarHiFi für Auto, Motorrad & Wohnmobil - Thitronik - Pandora - Ampire - Starline - Patrolline. is located in Berlin, Germany on Meeraner Str. 12. - GFK-Service GbR - Alarmanlagen & CarHiFi für Auto, Motorrad & Wohnmobil - Thitronik - Pandora - Ampire - Starline - Patrolline. is rated 4.9 out of 5 in the category car alarm supplier in Germany.