At present, there are two batches of sponge cities in China with 30 cities, as follows:
The first batch of 16 cities: Qian 'an, Baicheng, Zhenjiang, Jiaxing, Chizhou, Xiamen, Pingxiang, Jinan, Hebi, Wuhan, Changde, Nanning, Chongqing, Suining, Gui 'an New District and Xixian New Area.
The second batch of 14 cities: Beijing, Tianjin, Dalian, Shanghai, Ningbo, Fuzhou, Qingdao, Zhuhai, Shenzhen, Sanya, Yuxi, Qingyang, Xining and Guyuan.
Sponges in sponge cities include rivers, lakes, ponds and other water systems, as well as urban supporting facilities such as green spaces, gardens, permeable pavements and rainwater collection systems. Nanjing Jiuherun has unique patented technology and products in permeable pavement and ecological slope protection, which have been put into the market for many years and achieved good results, and won unanimous praise from all parties.