Research on brand design of small and medium sized micro enterprises Research on credit measurement of small and medium sized enterprises Research on brand design of time honored enterprises Research on decision support system of chemical enterprises Research on board diversity of state-owned enterprises Research on internet plus growth of small and micro enterprises Rationality of the existence of small and medium-sized enterprises Eco-innovation in small and medium-sized enterprises Research on the governance of small and medium-sized insurance institutions in China Research on business model innovation of enterprises