Some Chinese enterprises have inquired with U.S. exporters about the purchase of agricultural produce and applied for the lifting of tariffs on the products in accordance with the regulations of the Customs Tariff Commission of the State Council, Chinese authorities said Sunday.

China made its biggest purchase of U.S. sorghum since April last week, according to U.S. Department of Agriculture data issued on Thursday, as Washington and Beijing revive discussions to end their trade war.

U.S. and Chinese senior officials spoke by phone on Thursday in Washington, according to USTR.

Trade negotiations are at standstill as Washington weighs how much business with telecom-equipment giant to allow.

U.S. and Chinese trade officials held a “constructive” phone conversation on Tuesday, White House economic adviser Larry Kudlow said, marking a new round of talks after the world’s two largest economies agreed to a truce in a year-long trade war.

Top American and China negotiators are set to speak this week but disagreements threaten to bog down discussions.

At their Osaka meeting, Trump and Xi agreed to restart trade talks and work to improve US-China ties. Trump also stated he would add no additional tariffs to Chinese goods. The meeting demonstrates the continued importance of dispute management between the two economic powerhouses.

The US-China trade war is having a devastating effect on the global solar industry, and the cost of solar installations in the US has significantly increased.

The path to ending the trade war remains far from clear.