Combustion Class: Classified as Class B3 (highly flammable) under the GB 8624-2012 standard; non-flame-retardant design with no fire-resistant treatment.
Combustion Behavior: Burns rapidly upon ignition; produces a yellow flame with black smoke and molten droplets (which may ignite surrounding materials); significant heat release during combustion.
Combustion Products/Toxicity: Primarily generates carbon monoxide, carbon dioxide, and incompletely combusted hydrocarbons; may release toxic fumes (such as benzene compounds) if containing printing inks or composite layers (e.g., PET/AL).
Residue: Minimal ash after complete combustion, consisting mostly of shrunken, melted residue; incomplete combustion produces large amounts of black smoke and carbonaceous char.
