Core Viewpoint - Dongguan City has imposed a fine of 20,000 yuan on Heyuan Yuxiaofeng Engineering Machinery Rental Co., Ltd. for using high-emission non-road mobile machinery, with a complete ban on such machinery set to take effect citywide from November 1, 2025 [1][2]. Group 1: Regulatory Actions - Dongguan's ecological environment bureau reported the use of a high-emission excavator by Heyuan Yuxiaofeng Engineering Machinery Rental Co., Ltd. during an inspection of a construction project [1]. - The company was fined 20,000 yuan for violating regulations that prohibit the use of high-emission non-road mobile machinery in designated areas [1][3]. - The ban on high-emission non-road mobile machinery is part of a broader initiative to improve air quality and is effective from November 1, 2025, until October 31, 2028 [2]. Group 2: Company Information - Heyuan Yuxiaofeng Engineering Machinery Rental Co., Ltd. was established in 2020 and is primarily engaged in rental services [2]. - The company claimed that the excavator in question was a second-hand purchase and has since been disposed of to comply with regulations [2]. Group 3: Definition and Exemptions - The term "high-emission non-road mobile machinery" includes equipment that emits visible pollutants or exceeds specified smoke density limits [3]. - Certain exemptions are in place for military, police, fire, ambulance, and emergency rescue operations, allowing them to use non-road mobile machinery without restrictions [3].