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The Korean company HFG has developed an electric bus in cooperation with Hyundai Heavy Industries for use in Seoul city, and the bus has now been running since June.
The requirement for the bus to run 120km between charges was achieved thanks to the extensive use of composite materials. Epoxy prepreg was used for the body parts, and most of interior parts are made from Cray Valley’s Epovia flame retardant vinyl ester in combination with Armorcote / Polycor gelcoat.
By adopting carbon-epoxy prepreg for the body and fire-retardant vinyl ester GRP for interior parts, the total weight is 25% lower than conventional buses and driving cost is merely 100 KRW/km (0.07 €/km), only one-fifth of CNG buses.
15 buses are expected to be running by November 2010.
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