Four districts in Qingdao, namely Huangdao, Chengyang, Jimo and Laoshan, have been included among China's top 100 districts in terms of industrial development in 2022. Jiaozhou and Pingdu, two county-level cities in Qingdao, have also been included among China's top 100 counties in terms of industrial development this year. In 2021, there were 721 industrial enterprises above designated size in …