WASHINGTON — The trade deal that President Trump will sign on Wednesday includes commitments by China to curtail practices that American firms complain put them at a disadvantage and force them to hand over valuable intellectual property to Chinese firms, according to several people with knowledge of the deal.

Those concessions, along with China’s agreement to buy $200 billion worth of American goods and to allow greater access to its markets, are expected to be announced at a White House ceremony for the signing of the long-awaited trade deal.

As part of the agreement, China has promised to punish Chinese firms that infringe on or steal corporate trade secrets, satisfying a concern of American businesses. China will also refrain from directing Chinese companies to obtain delicate foreign technologies through acquisitions, including halting purchases by state-owned enterprises that “harm” American interests. American officials say Beijing has used the practice to leap to the forefront of advanced industries, like semiconductors.

Another primary concern of American companies — a requirement that they turn over technology as a condition of doing business in the country — is also addressed in the deal. China has agreed not to force companies to transfer technology, which it has done by requiring joint ventures with Chinese firms and forcing companies to license their intellectual property at low prices.