The machines can sort up to 200,000 packages a day and are self-charging, meaning they can operate around the clock.
An STO Express spokesman told the South China Morning Post on Monday that the robots had helped the company save half the costs it typically required to use human workers.
They also improved efficiency by around 30 per cent and maximised sorting accuracy, he said.
“We use these robots in two of our centres in Hangzhou right now,” the spokesman said. “We want to start using these across the country, especially in our bigger centres.”
Although the machines could run around the clock, they were presently used only for about six or seven hours each time from 6pm, he said.
