EDI to supply 30 plug-in hybrid electric buses in Kunming, China May 25, 2018 | Asia Pacific News United States-based Efficient Drivetrains Incorporated (EDI) has secured a contract from the city government of Kunming, China to supply 30 plug-in hybrid electric buses. With the delivery of these bu... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password