(CNN) US and Chinese negotiators wrapped up three days of trade talks in Beijing on Wednesday as they seek a way out of the damaging trade war between the world's two biggest economies.

American negotiators said in a statement Wednesday that there was a focus on discussing purchases of "a substantial amount" of agricultural, energy, manufactured goods and other products and services from the US by China but did not specify any new deals.

Officials also stressed the necessity that any trade deal with Beijing would require "ongoing verification and effective enforcement," according to a readout released by the office of the US Trade Representative.

It's unclear from the US statement how much headway negotiators made regarding US concerns over forced technology transfers and cybertheft of trade secrets for commercial purposes.

Negotiators appeared to make more progress on areas such as plans by China to step up purchases of American exports, while giving US companies greater access to its market in order to build confidence between the two sides after months of bitter confrontation.

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