January 4, 1984

The United States and China will sign an agreement on industrial cooperation next week and are making ''good progress'' on a treaty to define the rights of investors in each country, Administration officials said today. The Industrial and Technological Cooperation Agreement, which was initialed last week in Peking, will be signed during Prime Minister Zhao Ziyang's visit here Jan. 9-12, according to John Hughes, a State Department spokesman. This was confirmed by Commerce Department officials. The Zhao trip and a visit to Peking by President Reagan, which is expected in April, are part of continuing efforts to improve relations since the restoration of full diplomatic ties by President Jimmy Carter in December 1978.

Because of a production error, some copies of Business Day on Saturday carried page 33 twice and omitted page 36, which included stock option tables. Any reader wishing a copy of the missing page may write to Production Quality Control, The New York Times, 229 West 43d Street, New York, N.Y. 10036.

At 0810 hours yesterday, the new police precinct in Queens had its first case. At 1150 hours, the Police Commissioner brandished a symbolic key at the station house in Jackson Heights. The 115th Precinct was formally open for business. Business at New York City's newest precinct - the first to be created in more than a decade - will be a bit different from elsewhere in the city.

The Salvadoran armed forces have announced end-of-the-month military changes without meeting United States demands for the exiling of officers suspected of taking part in death-squad activities. Diplomats and Salvadoran politicians say that the Government is having difficulty complying with the demands to reduce violence and punish offenders that Vice President Bush delivered when he visited El Salvador early in December. People suspected of death-squad activity are apparently refusing to leave the country. State Department officials indicated last week that they felt the Salvadorans had made progress in complying with the demands. They offered as evidence the arrest of an officer implicated in the deaths of two American labor advisers, a decrease in political killings and the removal of the intelligence directors of two security forces.

President Reagan thanked President Hafez al- Assad of Syria today for releasing Lieut. Robert O. Goodman Jr. and declared that the flier's return presented ''an opportune moment to put all the issues on the table'' between the United States and Syria. ''All of us here are delighted, of course, that this has taken place,'' Mr. Reagan told reporters this morning shortly after speaking by telephone with Lieutenant Goodman and with the Rev. Jesse Jackson, whose visit to Damascus ended in the flier's release. A week ago, White House officials warned that a trip to Syria by Mr. Jackson could hinder rather than help the Administration's efforts to gain Lieutenant Goodman's release.