Expertise knows no address: Serbian GreenTrusters GreenTrust’s story in Serbia began long before the company was officially founded. In 2000, Romana, who now heads the Serbian office, met Jeroen Boerkamps, one of GreenTrust’s founders in the Netherlands. Romana’s husband knew Jeroen and introduced them to each other. What began as a pleasant acquaintance gradually grew ... Expertise knows no address: Serbian GreenTrusters