Core Viewpoint - The direct cause of the "8·21" safety incident at Rhine Biotech (002166.SZ) was identified as the operator's failure to follow operational procedures, leading to a series of technical failures that resulted in an explosion [2] Group 1: Incident Details - The investigation revealed that the operator did not open the vacuum pump valve or secure all the head clamps after loading the 2 vacuum belt dryer, which prevented the equipment from creating a negative pressure environment [2] - During the heating process, the evaporation of moisture and ethanol in the dryer caused pressure buildup, leading to the ejection of the head and subsequent ignition of ethanol vapor due to static electricity [2] Group 2: Regulatory Actions - The Guilin City Emergency Management Bureau imposed a fine of 600,000 yuan on Rhine Biotech as a result of the incident [2] - Recommendations were made for legal penalties against the workshop supervisor, team leader, EHS specialist, and production director, while the deceased operator was exempt from accountability [2] Group 3: Company Response - Following the incident, Rhine Biotech has implemented several corrective measures, including a comprehensive safety hazard inspection and hiring external experts for diagnostic evaluations [3] - The company has enhanced safety training for all employees, established a dual-review mechanism for key equipment, and initiated special safety production governance [3] - The affected drying workshop area is undergoing accelerated reconstruction, expected to be operational by early 2026, while other drying workshops will ensure production continuity [3]