WEST PALM BEACH, Fla. – President Donald Trump said Tuesday he will sign a "Phase One" trade deal with China on Jan. 15, and plans to visit China soon to start talks on a "Phase Two."

"I will be signing our very large and comprehensive Phase One Trade Deal with China on January 15," Trump tweeted. "The ceremony will take place at the White House. High-level representatives of China will be present."

He added that "at a later date I will be going to Beijing where talks will begin on Phase Two!"

Trump and aides still have not provided documents detailing what the first phase of an overall agreement involves. Financial analysts said they are eager to see what is actually in the reportedly voluminous deal.

"On phase one, the devil will be entirely in the details of what is apparently an 86-page agreement," said Chad Bown, a senior fellow with the Peterson Institute for International Economics. "I look forward to reading every single line."

Some financial analysts have questioned whether the proposed deal truly addresses what they called China's unfair trade tactics.

Others said the agreement will at least de-escalate the U.S.-China tariff war that has spooked investors and slowed the world economy.

Trump has made his vow to crack down on Chinese trade practices a major part of his 2020 election campaign.

The president announced the planned signing just minutes before financial markets in the U.S. opened for the final day of the year. Markets dropped slightly in early trading, but wound up the day in positive territory.

When Trump and Chinese officials announced the phase one agreement in mid-December, the U.S. agreed to shelve plans to impose new tariffs on $160 billion of Chinese goods that had been set to take effect Dec. 15.

Officials said the deal includes gradual reductions of other tariff rates and increased Chinese purchases of U.S. agricultural products, but neither side has published a specific document.

Analysts questioned whether the deal meaningfully answers U.S. demands that China drop requirements that companies provide intellectual property and technology secrets to the government as conditions of doing business there – key points in any overall trade agreement between the United States and China.

Peter Navarro, a White House trade adviser, told CNBC that the opening phase of the trade deal does address intellectual property theft, and should be pleasing to banks, insurance companies and credit card companies.

“It’s got great stuff in it,” he said.

Tori Smith, a trade economist with the Heritage Foundation, a conservative think tank, said the details of Phase One will determine what needs to be negotiated on Phase Two. "Future phases should include more tariff rollbacks and a resolution of non-tariff barrier topics, such as investment restrictions in China and intellectual property rights issues," she said.

The South China Morning Post reported Monday that Vice-Premier Liu He, China's top trade negotiator, is planning to lead a delegation to Washington for the first phase signing ceremony.

Phil Levy, a former White House official who is now chief economist of Flexport, a company that arranges and finances trade between 116 countries, said the phase one proposal is "certainly better than ever-escalating tariffs that hurt American businesses and consumers."

The details of substance that have emerged, however, seem "disappointing relative to the range of problems we have with China," Levy said. "There is also a problematic move toward managed trade, with the purchase commitments. We have yet to see all the specifics, though."