Since the world's first mass production of in-line fuel injection pumps in 1927 marked the start of the production of diesel fuel injection systems by Bosch, Bosch has been in a leading position in diesel fuel injection system technology. In 1997, Bosch began mass production of diesel common rail systems. Today, the system has been widely used in cars, buses, light commercial vehicles, heavy motor vehicles, locomotives, and ships. Correspondingly, Bosch diesel service network has also developed more and more perfect. As Bosch's most important partner in the field of diesel repair, Bosch Diesel System Service Center can provide both fault diagnosis of diesel system and comprehensive maintenance of professional core components. It is Bosch's diesel system repair expert. By the end of 2011, Bosch had established 776 Bosch Diesel System Service Centers (BDC) and 3,123 Bosch Diesel System Service Stations (BDS) worldwide.