Service practice of micro small and medium-sized enterprises Eco-innovation in small and medium-sized enterprises Pension insurance participation of small and medium-sized enterprises Growth influential factors of small and medium-sized enterprises Research on credit measurement of small and medium sized enterprises Rationality of the existence of small and medium-sized enterprises Technological innovation and competition of small and medium sized enterprises Systematic analysis on the growth competence of small and medium sized enterprises Development of small and medium enterprises Research on brand design of small and medium sized micro enterprises