Standing in a workshop in Hangzhou, Zhejiang province, Tian Chunlong, president of the commercial vehicle unit of BYD Auto Co Ltd, a Shenzhen, Guangdong province-based new-energy vehicle manufacturer, and his colleagues explained the details and "wow points" of electric buses to their Spanish clients in Alcorcon during an online product inspection link earlier this month. These 15 buses will be shipped to the European country in the first half of 2023.