How many service areas does Shen Chang Expressway have from Shenzhen to Heyuan?

Shen Chang Expressway has 70 to 80 service areas from Shenzhen to Heyuan. G25 is an expressway, which is the code name of Shen Chang Expressway. Shen Chang Expressway refers to Changshenguo Expressway, or Shen Chang Expressway for short (code G25). It is an expressway connecting Changchun City in Jilin Province and Shenzhen City in Guangdong Province, with a total length of 3,585 kilometers. Generally speaking, there is a service area every 30 to 50 kilometers, so there are about 70 to 80 service areas on Shen Chang Expressway.