全国统一大市场建设与中小企业专精特新发展

The Construction of a Unified National Market and SMEs'Specialized and Innovative Development

以2006—2021年深交所中小板企业为研究样本,基于主成分分析方法构建中小企业专精特新发展评价指标体系,运用双向固定效应模型、两阶段最小二乘法和中介效应模型考察全国统一大市场建设对中小企业专精特新发展的影响及其路径机制。研究发现,全国统一大市场建设可以显著推动中小企业专精特新发展。上述结论经过内生性识别和稳健性检验后依然成立。在两职合一企业、高新技术企业和高等学校集聚度高的地区,全国统一大市场建设对中小企业专精特新发展的促进作用更大。机制检验表明,全国统一大市场建设可以通过扩大市场需求、降低企业交易成本和增加供应商渠道三条路径推动中小企业专精特新发展。

Taking the small and medium-sized enterprises listed on the Shenzhen Stock Exchange from 2006 to 2021 as research sam-ples,the principal component analysis method is used to construct indicators for the specialized and innovative development of small and medium-sized enterprises.The bidirectional fixed effect model,two-stage least squares method,and mediation effect model are used to examine the impact and path mechanism of the construction of a unified national market on the specialized and innovative devel-opment of small and medium-sized enterprises.Research has found that the construction of a unified national market can significantly promote the specialized and innovative development of small and medium-sized enterprises.The above conclusion is still valid after en-dogeneity identification and robustness testing.In areas with a high concentration of dual certification enterprises,high-tech indus-tries,and higher education institutions,the construction of a unified national market has a greater promoting effect on the specialized and innovative development of small and medium-sized enterprises.Mechanism testing shows that the construction of a unified national market can promote the specialized and innovative development of small and medium-sized enterprises through three paths:expanding market demand,reducing transaction costs for enterprises,and increasing supplier channels.