Research on the international marketing system and system-based advantage of enterprise Research on the international market entry strategies and performance evaluation of Chinese enterprises Research on the international market entry strategies and performance evaluation of Chinese enterprises. Research on the green innovation model and system of enterprise Research on the income sharing system of the state-owned enterprises Research on enterprise marketing strategy based on internet plus Research on the international legal system of diplomatic protection Research on the R&D supporting system models of innovative enterprises Research on international marketing of small and medium-sized enterprises in Shandong Province Research of the international arbitration system in countries along the Belt and Road