For Eric Huang, a Guangdong-based healthcare entrepreneur who owns a Lamborghini Aventador and a Tesla Model S Plaid, the appeal of Chinese premium electric vehicles (EVs) has grown as their technology has caught up with his expectations. “I hold electric cars to strict safety standards, so I used to stick to Tesla,” Huang said. But he added that domestic brands had now met his standards. His next purchase, he said, would be a six-seat premium electric minivan equivalent from a Chinese brand,...