1, China HowNet: China HowNet is one of the largest academic databases in China, providing a large number of academic literature resources.
2. Wanfang Database: Wanfang Database is a well-known academic paper database in China, which includes academic documents of various disciplines.
3. VIP: VIP is a comprehensive database of academic journals in China, providing a large number of academic literature resources.
With the intensification of market competition and the acceleration of the process of world economic integration, the marketing environment in 2 1 century has undergo