Description of city grade
OYM Logistics Alliance based on the past year's storage demand statistics, according to each city monthly demand for the average number of indicators as a basis for reference, the country's cities divided into three levels.
Class I city division
Guangzhou, Beijing, Shanghai, Hangzhou, Tianjin, Shenzhen, Shenzhen, Foshan, Chongqing, Nanjing
Secondary city division
Changsha, Jiangsu, Hangzhou, Wuxi, Xi'an, Qingdao, Kunming, Jinhua, Shijiazhuang, Xiamen, Zhongshan, Changzhou, Hefei, Shaoxing, Shenyang, Nanning, Guiyang, Haikou, Nanchang, Jiaxing, Taizhou, Quanzhou
Classification of three cities
All other cities not in the first or second tier cities, excluding Macao, Taiwan and overseas cities