The company’s American units filed a lawsuit in the US Court of International Trade on Jan 26, arguing that a suite of executive orders that underpin the tariffs are invalid, making the collection of the duties unlawful, according to the filing.

A US Supreme Court decision on the legality of Trump’s signature levies is pending. BYD’s units said they’ve brought their lawsuit as they’re not assured of a refund in the absence of their own judgment and judicial relief.

A spokesperson for BYD in China didn’t immediately respond to a Bloomberg News request for comment. Caixin Global reported the lawsuit earlier.

Already more than 1,000 corporate entities, including household names like Costco Wholesale Corp and Goodyear Tire & Rubber Co, are suing for refunds for their share of the billions of dollars in tariffs that the US has collected so far.

Trump said in a November social media post that being forced to pay refunds “would be a National Security catastrophe.”

BYD, which designs and manufactures electric buses and trucks in the US, said in the lawsuit that it has paid and continues to pay “significant” duties on materials it imports to sustain its American operations.

While the company is the global EV leader, it doesn’t sell passenger cars in the US due to substantial tariffs and a complex regulatory environment.