What are the 2G packages of China Unicom?

Unicom's 2G packages have brands such as New Power, Ruyi Tong, Shifeng, etc., and each brand's packages are different, and the tariffs of each package are different. The tariffs of 2G packages in different provinces and cities are also different. So what are the specific 2G packages? What is the tariff? I suggest you consult the local Unicom business hall, subject to the local 2G package.