China's first batch of hybrid diesel locomotives has been delivered, according to a report in the Science and Technology Daily on Saturday.

The locomotives were developed by Anshan Iron and Steel Group Company Limited and CRRC Dalian Co., Ltd. (CRRC Dalian). Compared to conventional diesel locomotives, these new products have significant advantages in terms of performance and environmental friendliness, the report said.

Equipped with dual power systems and centralized control units, the new locomotives can intelligently switch power modes according to different scenarios and working conditions, achieving a fuel-saving efficiency of more than 30 percent, according to the report.

When the outdoor temperature is between minus 40 degrees Celsius and 40 degrees Celsius, a thermal support system cools or heats the locomotive's power battery.

Compared to older diesel locomotives, these new vehicles can reduce emissions of nitrogen oxides by about 45 percent, hydrocarbons by approximately 73 percent and carbon monoxide by roughly 83 percent, according to the report.