What is the fine-grained topic of the following text: “The majority of the customers have been sent an email saying request for quotation for a Multi-Gas High Energy Retention Gas Detector (XMS-808),” explained the fraud investigator, adding that most customers interpret this as breathalyzers used at the mines. Only return the topic.
Fraud investigation into quotation requests for a specific gas detector misinterpreted as breathalyzers for mines.