Group 1 - The 2025 China International Service Trade Fair is being held from September 10 to 14 in Beijing, showcasing over 20 industry enterprises in the environmental services sector [1] - Smart recycling machines from the company "Aihuishou" are featured at the fair, which collect recyclable materials and provide instant monetary rewards to users [1] - Beijing has deployed over 2,100 smart recycling machines, achieving a daily collection of 150 tons and a total of 11,000 tons of recyclable materials [2] Group 2 - A gas inspection robot designed for residential areas is showcased, equipped with advanced technologies for efficient gas safety inspections [2] - The robot's design allows it to navigate various terrains, enhancing its ability to detect gas leaks and improve safety measures [2][3] - The fair also features a range of innovative products and technologies aimed at enhancing urban management and improving residents' quality of life [3]