An AG600 large amphibious firefighting aircraft is seen during a flight test in Jingmen, central China's Hubei Province, in April 2023. (Aviation Industry Corporation of China/Handout via Xinhua)

BEIJING, June 11 (Xinhua) -- China's domestically developed AG600 "Kunlong" amphibious aircraft has officially entered mass production after receiving the production certificate from the Civil Aviation Administration of China on Wednesday.