China has unveiled the world's first technical standards on the energy consumption of electric vehicles (EV).

中国公布世界首个电动汽车能源消耗的技术标准。

The national standards specify energy-consumption limits for different types of EVs.

China is the world's largest EV market.

The sales of new energy vehicles soared over 60 percent year on year to 1.2 million units last year.