What are the famous 3A national tourism factories in the country? Can you give an example?

Jinjiazhuang (Huizhou) Health Food Co., Ltd. is the one! It has established a long-term scientific research cooperation relationship with South China University of Technology. On January 5, 2017, it was officially rated as a national AAA tourist attraction. It is an industrial tourism demonstration base in Guangdong Province and the favorite tourist attraction of Huizhou people. The Li Xiaotang egg yolk cakes produced in their factory are very delicious. If you have time, you can visit their factory. If you don’t have time, you can buy it online and try their egg yolk cake, it’s so delicious.