​Beijing, Nov 6 (IANS) German automaker Volkswagen has planned to introduce 15 models of new energy vehicles in China that are locally produced, the company said on Sunday. These models will be released in the next three to four years to address the environmental protection needs in Chinese market, an official of the Volkswagen Group China said in Tianjin city, where a joint venture project of the company is under construction, Xinhua news agency reported. China is Volkswagen's largest market worldwide. Volkswagen Group China and its two joint ventures delivered 2.85 million automobiles in the Chinese mainland and Hong Kong in the first three quarters, up 10.7 per cent year on year.