Core Viewpoint - The quality supervision and inspection results for automotive urea products in Hainan Province for Q4 2025 indicate that all 25 batches tested were compliant with relevant standards, reflecting a positive trend in product quality assurance in the region [2]. Group 1: Inspection Results - A total of 25 batches of automotive urea products were inspected, and all were found to be compliant with the standards [2]. - The inspection was conducted based on GB 29518-2013 and included tests for urea content, density, refractive index, alkalinity, biuret, aldehydes, insolubles, phosphates, and various metal contents [2]. Group 2: Product Details - The inspected products included various brands and specifications, such as: - Diesel vehicle exhaust treatment liquid with a net content of 10 kg from China Petroleum and Chemical Corporation [2]. - AUS 32 diesel exhaust purification liquid in 10 kg barrels from Shandong New Blue Environmental Technology Co., Ltd. [2]. - Multiple products branded as "悦泰海龙" and "咔咔酷优特" with specifications of 10 kg and 20 kg [3]. - The production dates for the inspected products ranged from July to September 2025, indicating recent market activity [3].