- Since 2017, HiSERV has been transforming the GSE (Ground Support Equipment) market through outstanding quality, high flexibility, and fair, transparent pricing. We manage and offer our customers a young, modern fleet of more than 14,000 units. With shortterm rentals, payperuse models, and realtime tracking, we optimally meet our customers' needs. Our clients include renowned companies in ground handling, airlines, and airports across Europe....