Study on the construction of an integrated credit system in the Delta 并列题名：Study on the construction of an integrated credit system in the Delta Study of construction of modern economic system in the new era Study on the construction bonding system in China Study on the construction of new agricultural management system in Beijing 并列题名：Study on the construction bonding system in China study on the construction of Ningbo "the Belt and Road" comprehensive test area Research on the construction of rural integrated elderly care and medical services system in China Research on the construction of China's social credit supervision system the study on the construction of Chinese governance system