HOUSTON, March 20 (Reuters) - Rising sales of electric cars in China will reduce refined product demand in the nation by 20 million tons per year, the CEO of China's largest oil refiner said on Tuesday.

Sinopec Corp, the world's largest oil refiner with processing capacity for 6 million barrels per day, is building more than 6,000 charging stations with 60,000 charging points, Dong Zhao said at the CERAWeek energy conference. (Reporting by Arathy Somasekhar)