Is the labor contract of Yonghui Supermarket signed once every three years?

They are all signed once every three years. According to the recruitment information of Yonghui Supermarket, the labor contract of Yonghui Supermarket is signed every three years, and the internship period is 3 months. Yonghui Supermarket, established in 200 1, is one of the top 500 Chinese enterprises and a national leading enterprise in circulation and agricultural industrialization.