The electronics arm of electric-vehicle maker BYD Co. agreed to buy Jabil Inc.’s manufacturing business in China for 15.8 billion yuan ($2.2 billion), expanding its production base in the world’s largest mobile arena.

BYD Electronic International Co., a non-wholly owned unit of one of China’s biggest EV makers, is taking over the US company’s product manufacturing business located in Chengdu and Wuxi, China, it said in a statement Monday. The pact includes the manufacturing of products for existing customers.