BUZZ-Hydrogenics Corp: On track for biggest pct gain in 2 months
** Canadian fuel-cell maker's U.S-listed shares up 6.8 pct at $8 premarket
** Stock set for biggest pct gain in nearly two months
** Company signs agreement for $13.5 mln with SinoHytec, Beijing-based vehicle propulsion technology company, for delivery of fuel cells in China
** Power systems, specifically designed for Chinese market, to be integrated into buses and trucks in China during 2016 and 2017
** Deal follows company's agreements with several Chinese electric vehicle integrators in November
** Up to Tuesday's close, stock had fallen 32 pct in past 12 months
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