Prototype production began in September 2002; a full-size mock-up of the FC-1/Super 7 was displayed at Airshow China in November 2002. The first batch of Klimov RD-93 turbofan engines that would power the prototypes was also delivered in 2002. According to a China National Aero-Technology Import & Export Corporation (CATIC) official, the JF-17's low cost is due to some of the on-board systems having been adapted from those of the Chengdu J-10. The official said, "This transfer of technologytransposing the aircraft systems from the J-10 to the JF-17is what makes the JF-17 so cost-effective". The use of computer-aided design software shortened the design phase of the JF-17.