WASHINGTON (Reuters) – President Donald Trump said on Thursday he wanted a “very big deal” U.S. trade deal with China, but signaled there could be delays if negotiations fail to meet his goals of opening the Chinese economy broadly to U.S. industry and agriculture.

In remarks to reporters as a two-day round of high-level talks between U.S. and Chinese negotiators wound down, Trump said he did not know whether he would push back a deadline to raise U.S. tariffs on Chinese goods at the beginning of March.

“This isn’t going to be a small deal with China. This is either going to be a very big deal, or it’s going to be a deal that we’ll just postpone for a little while,” Trump, who has engaged in a series of fights with a variety of trade partners since becoming president in 2017, said at the White House.

As delegations from the world’s two top economies held the second of two scheduled days of talks in the U.S. capital aimed at easing a six-month-old trade war, Trump said no final accord will be made until he meets with Chinese President Xi Jinping in the near future.

U.S. negotiators have sought to resolve deep differences over China’s intellectual property practices. Trump has threatened to raise tariffs on $200 billion of Chinese goods to 25 percent from 10 percent on March 2 if an agreement is not reached and impose new tariffs on the rest of Chinese goods shipped to the United States.

Asked if he would postpone the U.S.-set deadline, Trump said: “I don’t know.”

Trump said China wanted to strike a deal by March 1 to avoid the tariff increase and said he thinks he can get one, but it may not be totally fleshed out in writing by then.

“I’d like to accommodate China if we can get the deal done,” Trump said.

An official with the U.S. Chamber of Commerce business group said after being briefed on the talks that significant differences remained between the two sides, with no new Chinese proposals to address core U.S. demands that Beijing end forced transfers of U.S. technology to Chinese firms, heavy state industrial subsidies and discriminatory digital trade laws.

“Our sense from our discussions last week in China is that China is struggling to come up with anything on the technology transfer side, and from our standpoint that’s problematic,” Myron Brilliant, the chamber’s head of international affairs, said.

Brilliant added that there was some progress in narrowing differences over enforcement of intellectual property rights such as copyright and piracy criminalization issues.

Trump was scheduled to meet with the leader of the Chinese delegation, Vice Premier Liu He, at the White House later in the day as talks conclude. Two White House officials said it was likely Liu would extend an offer for Trump to meet with Xi in China.

‘A COMPLETE DEAL’

Trump has vetoed multiple proposed trade deals with China, choosing to push ahead with tariffs on Chinese goods to gain leverage.

The Republican president set a high bar for any agreement in the current round of talks, writing on Twitter, “China’s representatives and I are trying to do a complete deal leaving NOTHING unresolved on the table.”

Trump said he was looking for China to open its markets “not only to Financial Services, which they are now doing, but also to our Manufacturing, Farmers and other U.S. businesses and industries. Without this a deal would be unacceptable!”

People’s Bank of China Governor Yi Gang declined comment on Chinese proposals as he left the delegation’s hotel for the meetings in Eisenhower Executive Office Building, next to the White House. Asked how the talks were going, Yi flashed a thumbs-up sign.

U.S. officials have demanded that Beijing make deep structural changes to its industrial policies, including broad new protections for American intellectual property and an end to practices that Washington has said force U.S. companies to transfer technology to Chinese firms in exchange for market access.

The U.S. complaints, along with accusations of Chinese cyber theft of American trade secrets and a systematic campaign to acquire U.S. technology firms, were used by Trump’s administration to justify punitive tariffs on $250 billion worth of Chinese imports.

China has retaliated with tariffs of its own, but has suspended some and is allowing some purchases of U.S. soybeans during the talks.

Chinese officials have said their policies do not coerce technology transfers.

The U.S. tariffs on Chinese goods are just one front in Trump’s efforts to upend the global trading order with his “America First” strategy. He has also imposed global tariffs on imported steel and aluminum, washing machines and solar panels and has threatened to raise tariffs on imported cars unless Japan and the European Union offer trade concessions.