Core Viewpoint - The investigation reveals that many fire masks sold online do not meet safety standards, with some materials being flammable and unsuitable for fire escape [1][2][3] Group 1: Product Testing Results - Testing of eight fire masks from major e-commerce platforms showed that some products were misrepresented as fire masks but were actually industrial half masks, which are not suitable for fire escape [2] - Among the tested masks, several exhibited poor fit and inadequate flame resistance, with some materials igniting upon contact with fire [3][5] - Specific brands showed significant discrepancies in performance, with one model burning continuously while another from the same brand performed well [1][3] Group 2: Standards and Regulations - The proper fire escape masks should comply with the mandatory standard GB 21976.7-2012, while many tested products adhered to the incorrect standard GB 2890, which is meant for industrial use [2][3] - The importance of flame resistance in fire masks is emphasized, as they must not sustain burning or melting when exposed to flames [3][5] Group 3: Industry Concerns - Reports indicate a widespread issue with substandard and expired fire masks in the market, prompting regulatory bodies to conduct quality safety inspections [7] - The investigation highlights the critical need for effective regulation and consumer awareness regarding the safety of fire escape equipment [7]