Investor Presentaiton

Economics of Natural Gas as Transportation Fuels ENN 新奥 Payback calculation of a CNG taxi Payback calculation of a new LNG truck Total number of CNG stations by ENN Average gasoline price (RMB/litre) 294 Total number of LNG stations by ENN 249 6.1 Average diesel price (RMB/litre) 5.7 Average CNG price (RMB/m³) 4.4 Average LNG price (RMB/m³) 4.0 Gasoline consumption per km (litre) 0.05 Diesel consumption per km (litre) 0.4 CNG consumption per km (m³) 0.055 LNG consumption per km (m³) 0.44 Cost saved per km (RMB) 0.06 Cost saved per km (RMB) 0.52 Average driving distance (km/day) 400 Average driving distance (km/day) 400 Daily average savings (RMB) Monthly average savings (RMB) Conversion fee (RMB) Payback period (months) Q Reduce fuel costs by over 20% 24 Daily average savings (RMB) 208 720 Monthly average savings (RMB) 6,240 3,500 Price difference of LNG & diesel truck (RMB) 60,000 4.9 Payback period (months) 9.6 25

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