Alibaba, the e-commerce company, and two state-backed firms have set up an electric car joint venture under the name IM Motors, which plans to begin delivering cars early next year.

Evergrande named its brand Hengchi, pronounced “Hung-cheh.” A stock market mania for electric cars has propelled the Hong Kong-traded shares of the company’s electric car unit, Evergrande New Energy Vehicle, to almost the same market capitalization as G.M.

Evergrande plans to make and sell a million fully electric cars a year by 2025. So far, it has sold none.

Geely, an industry veteran with recognized brands in China, has named its electric brand Zeekr, which rhymes with “seeker.” It plans to begin delivering cars in October.

The Zeekr is being made in a new electric car factory near Ningbo, on China’s eastern coast. The factory is a cavernous space with miles of white conveyor belts and rows of 15-foot cream-colored robots made by ABB of Sweden. It has an initial capacity of 300,000 cars a year, larger than most car factories in Detroit, and floor space for expansion.

“What is the most important thing is, China has the market,” said Zhao Chunlin, the factory’s general manager.

Mr. He named Xpeng, pronounced “X-pung,” after himself. Xpeng’s niche feature is a cooing, Siri-like voice assistant that guides the car’s internet services, like directions and music, and its computer-assisted highway driving. Xpeng plans to have the capacity to make 300,000 cars a year by 2024; last year it sold fewer than one-tenth that many.

Mr. He made his first fortune developing a mobile phone browser company, UCWeb. He sold it to Alibaba in 2014 and became president of Alibaba’s mobile business services unit. The same year he helped bankroll two former executives from state-owned Guangzhou Auto to start Xpeng.

Three years later, Mr. He took direct control of Xpeng and left Alibaba, which also acquired a small stake in the automaker. Mr. He said that his second child had been born, and that he wanted to be able to tell his son that he led a car company. Mr. He holds 23 percent of Xpeng’s shares, while Alibaba holds 12 percent.

Chinese government officials have helped along the way. A state-owned enterprise in Zhaoqing, a 1,000-year-old jade-carving town near Guangzhou, lent $233 million to Xpeng in 2017 for the construction of its initial factory with annual capacity of about 100,000 cars. The city has been subsidizing the company’s interest payments since then, according to Xpeng’s regulatory filings.

The city of Wuhan helped Xpeng buy land and borrow money at low interest rates for a new plant there. The Guangzhou government also helped Xpeng start building its factory in that city, said Brian Gu, vice chairman and president of Xpeng.

Last year, after weathering the pandemic, Xpeng cashed in on Wall Street, where Tesla’s rise whetted investor appetite for the industry. The Chinese company raised $5 billion in an initial public offering and subsequent share sales. It is spending part of the money on new factories and part of it on research and development, particularly in autonomous driving.

Xpeng’s deep pockets are visible in costly automation at its Zhaoqing factory. Robots lift 44-pound car roofs of dark tinted glass, apply aerospace-strength glue and press them into place. Waist-high robots glide across the gray concrete floor, carrying instrument panels while playing an instrumental version of Celine Dion’s “My Heart Will Go On.” (The robots came programmed that way, company officials explained.)

The factory took only 15 months to build, considerably faster than assembly plants in the West. Yan Hui, the general manager of the factory’s final assembly area, said decisions were made more quickly than at the German auto parts manufacturer where he used to work.

“Any design change took a long time — sign, sign, even sign in German,” he said. “But at Xpeng, we can just make the change.”

Even though many of the electric car brands are new to China, their owners already have ambitions abroad. Xpeng is starting to export cars to Europe, beginning with Norway. Chery, a big state-owned automaker in central China, announced last week that it would start exporting gasoline-powered cars to the United States next year and follow with electric cars.

The United States will be a difficult market. The Trump administration imposed 25 percent taxes in 2018 on cars imported from China, which has slowed exports. Many electric car parts are covered by the same tariffs. That makes it harder, but not impossible, for Chinese companies to start shipping electric cars in kits to the United States for assembly.

For now, Chinese companies see huge potential to build their brands.

Michael Dunne, the chief executive of ZoZo Go, a consulting firm specializing in the electric car industry in Asia, said the industry’s outlook was becoming clear: “China is going to be the global dominator when it comes to making electric cars.”

Liu Yi and Coral Yang contributed research.

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