Chart, page-3982

I m not sure how relaible your source information is even though that is something on the way.
What I can confirm is that as of yesterday another major Chinese car manufacturer ChangAn had announced stop selling all petrol cars from 2025.
http://www.cq.chinanews.com/auto/2017/1025/335.html

Google translation:
Changan Automobile 2025 full sale of fuel cars full spectrum of product electrification October 25, 2017 Source: Chongqing Morning News Comments: 0 Recently, Changan Automobile new energy strategy and new listing conference held in Beijing National Convention Center. Changan Automobile President Zhu Huarong said that in 2020 to complete the three new energy-specific platform to build; 2025, Changan Automobile will begin to stop the sale of the traditional meaning of the fuel truck, to achieve the full spectrum of product electrification. Changan Automobile to vigorously promote the rapid implementation of new energy strategy in the whole industry chain will invest more than 100 billion yuan, the introduction of pure electric vehicle products 21, plug-in hybrid products 12, to achieve "charging 5 minutes, Km ", life mileage will be more than 1000 km.

cheers
Andy