The Ministry of Commerce said China has accepted the detail discussion requested by the United States, which initiated a case to the World Trade Organization against China's aircraft import tax last month.

The aircraft products challenged by the United States are China's domestically made commercial aircrafts, regional passenger jets and agricultural airplanes.

Ministry spokesman Shen Danyang said China has been keen to develop aviation industry and related sectors under the WTO rule and expresses regret over the appeal case initiated by the US.

Commercial Aircraft Corporation of China, the country's aircraft maker, also denied it was given tax breaks by the government in breach of WTO rules after the US initiated a WTO case against China's aircraft import tax.

All of COMAC's market transactions, including its sales of planes and import of parts and components from the company's overseas suppliers, are subject to strict regulation and relevant taxes, according to the company.