The port operator handled 17.4 percent more containers in June from a year earlier, down from a 20.6 percent increase in May and 19.1 percent rise in April.
Terminals in the Bohai Rim area posted the slowest year-on-year growth of 8.9 percent, growth at Yangtze River and Pearl River Delta terminals still hovered above 20 percent.
In the first half, the port operator moved 22.43 million TEUs, up by 18.7 percent a year earlier.