Is there a charge from Laiwu South to Jinan Ganggou?

No charge.

According to official website of Jinan Urban and Rural Transportation Bureau, Jinan passenger cars Lu A and Lu S pass through Jilai Expressway point-to-point, free of tolls; The free zone is the 1 1 toll station where the entrance and exit stations must pass through Ganggou, Panlong, Chua, Bucun, Ye Xue, Laiwu North, Laiwu High-tech Zone, Laiwu East, Gangcheng, Xinzhuang and Gangcheng West. Free access to the expressway through ETC lane.