Beijing will suspend certain restrictions on dozens of US defence and aerospace firms "to implement the consensus reached at the China-US high-level economic and trade talks", a spokesperson for the Chinese commerce ministry said.

US President Donald Trump in April upended international commerce with his sweeping tariffs across economies, with China hit hardest.

Beijing responded with retaliatory tariffs and countermeasures, including restricting the ability of some US companies to do business in China.

The two countries however agreed to slash their skyhigh tariffs starting Wednesday after top negotiators met in Geneva over the weekend.

The United States on Wednesday lowered its tariffs on Chinese goods from 145 to 30 percent while China reduced its own from 125 to 10 percent.

In their joint statement released Monday, China added that it would take "all necessary administrative measures to suspend or remove the non-tariff countermeasures" after Trump launched his tariff war.

Beijing's commerce ministry confirmed in its statement Wednesday that it was suspending for 90 days measures that put 28 US entities -- including defence and aviation firms -- on the "export control list".

That list bars firms from receiving "dual-use" items that could be used for both civilian and military purposes.

And in a separate statement Wednesday, the ministry said it was pausing measures that added 17 US entities -- including defence, auto and artificial intelligence firms -- to the "unreliable entity list".

Companies on that list are prohibited from import and export activities or making new investments in China.

The suspension for 11 entities added to the list on April 4 applies for 90 days, while the ministry did not specify the length of the suspension for six other companies added to the list on April 9.

The ministry did not give a reason for the difference in suspension lengths.

Beijing had also in April announced export controls on seven rare earth elements -- including ones used in magnetic imaging and consumer electronics -- which remain in place.