China-Places.com listou aprox 10 Construtoras e empresas de construção imobiliária dentro Hai'an. Alguns dos mais bem avaliados Construtoras e empresas de construção imobiliária dentro Hai'an estão- Hai'an Zhengxin Construction Company Engineering Co.Ltd., Suzhong Construction Group Company Limited No.4 Engineering Company, Empresa de engenharia de construção Zhenhua, Nantong Huarui Construction Company Installation Engineering Co.Ltd., Nantong Longxing Construction Company Installation Engineering Co.Ltd., Nantong Xinhuanyu Construction Company Installation Engineering Co.Ltd., Jiangsu Xintuo Construction (Grupo) Co.Ltd., Nantong Shuanglou Construction Company Installation Engineering Co.Ltd., CPC Nantong Xichang Construction Company Installation Engineering Co. Ltd. Comitê do Comitê de Filial Geral & Nantong Linxing Construction Company Installation Engineering Co.Ltd..