Contemporary Amperex Technology, the world’s largest electric vehicle battery maker, started taking investor orders on Monday for a listing in Hong Kong that could raise more than HK$31 billion ($4 billion).

The Chinese battery giant is planning to raise as much as US$4.0 billion in the year’s biggest listing in Hong Kong.

Chinese battery giant CATL is poised to raise at least HK$31.01bn ($3.99bn) in a Hong Kong listing. The EV battery manufacturer plans to offer 117.9 million shares at a maximum price of HK$263 each. The listing could potentially swell to around $5.