Refers to the direct contact and cooperation mechanism established between tax authorities and park management institutions. According to Sina Finance official website's query, through the direct tax linkage mechanism in the park, the tax authorities can better understand the business situation and tax demand of enterprises in the park, provide targeted tax consultation and services, and solve the tax problems of enterprises in time. At the same time, the park management agencies also better grasp the tax payment situation of enterprises, strengthen supervision and services to enterprises, and promote the healthy development of enterprises.