Snow plows, traffic lights and fire extinguishers are just a few of the products and services that the District of Columbia will help display at a trade show in Peking in October.

The upcoming trade show is the second phase of what Mayor Marion Barry has called a "major step toward making the District a world center for culture, international trade and finance."

The exchange between the two capitals is the result of a sister-city agreement signed by Barry and Peking officials in May.

After that, the Chinese government brought items ranging from carpets to baseball gloves to a trade show at the Washington Convention Center in September, which netted almost $20 million in contracts for American companies and $41 million for the Chinese.

In preparation for the upcoming show, members of D.C.'s Office of Economic Development have turned to the association community to help round up participants.

At the American Society of Association Executives headquarters here last week, Curtis McLinton, D.C.'s deputy mayor for economic development, met with a group of association executives and asked them to contact member companies and urge them to participate in the Peking show.

Associations that deal with law enforcement, highway safety, public works, heating and cooling appliances (because Peking is converting from coal to gas fuel in the near future) telecommunications, health care, electronics, optical and other manufacturing areas were asked to take part in the trade show.

Although the association community is acting only as an intermediary, Courtland Cox, a special assistant to the mayor, suggested that it may play a more integral part in the future.

Associations can offer knowledge of information management, which could become the District's foremost export commodity, he said.

A spokeswoman for ASAE agreed and said that she hoped that in the future, the District would call on associations to export information-management expertise and meeting planning skills. PROFESSIONAL

Three minority-oriented associations have signed an agreement to strengthen relations between the Asian and black business communities in the country. At the Hyatt Regency in Crystal City last week, the National Business League, the National Association of Real Estate Brokers and the Asian Pacific American Chamber of Commerce agreed to support each other by entering into joint ventures and other business opportunities together.

The American Management Association and the International Personnel Management Association have both launched efforts to address what one organization member called the most controversial issue facing employers today, AIDS (acquired immune deficiency syndrome) in the workplace. IPMA has compiled an information packet for its members regarding AIDS and has signed on as a contributing organization for the Public Broadcasting System teleconference on March 26 called "AIDS in the Workplace." The AMA is sponsoring a conference in New York on "Cocaine and AIDS in the Workplace."

Anne L. Bryant, the newly appointed executive director of the American Association of University Women, will move from Chicago soon to start in her new position with the Washington group in mid-April, according to an association spokesman. TRADE

The Videotex Industry Association whose member companies deliver or use electronic information, has selected Colin Reeve, the vice president of interactive services for Shearson/American Express, as its chairman. Along with his other new duties, Reeve will be responsible for the 4-year-old association's first industry trade show which will take place in New York in September.

The former vice president of government affairs for the Glass Packaging Institute has returned to the institute as president after 1 1/2 years with another nonprofit group. Lewis D. Andrews left the Glass Institute in 1984 to head the Committee for Equitable Compensation, a trade group that represents companies negotiating asbestos liability claims. Andrews is replacing William W. Saad, who resigned on Jan. 1.

Glen Braswell, a veteran association executve who has headed the American Amusement Machine Association for the past four years, took over as president of the Flexible Packaging Institute as of Saturday. Braswell worked closely with the FBI and video-game manufacturers to battle counterfeiting for the video-game industry during his three years with the AAMA. Members of FPA are companies that convert and supply raw materials and machinery for paper, plastic and foil packaging.