Polytetrafluoroethylene (PTFE): translucent to opaque, easy to bend, elastic. Non combustible. Having a pungent odor (HF).
　　Polyamide (PA): translucent to opaque. Difficult to burn, immediately extinguished after leaving the flame. When burning in flames when the smoke, the upper is orange red; with melting, dripping and blistering; you can smell the smell of burnt wool.
　　Polycarbonate (PC): transparent to opaque. Hard quality. Refractory. In the flames of burning black smoke, bright, charring, blistering phenomenon; can smell the smell of phenol.
　　Phenolic resin (PF): (usually contain fillers) dark tone. Refractory. In the flame burning bright yellow flame, black smoke, cracking and color deepening phenomenon.
　　Polyvinyl chloride (PVC): transparent to opaque. Refractory. In the flame burning yellow, flame edge green, white smoke; softening. Can smell the burnt paste.
　　Amino resin (UF / MF / urea formaldehyde; melamine formaldehyde): (including hard packing). Refractory. In the flame burning bright yellow; carbonization, expansion, cracking phenomenon. Can smell ammonia, formaldehyde, fishy smell.
　　Polyethylene (PE): translucent to opaque, hard; transparent film. To burn out or continue to burn in flames. When burning, the flame is yellow on the top and blue at the bottom. Smell of paraffin.
　　Polypropylene (PP): translucent to opaque, hard; transparent film. To burn out or continue to burn in flames. When burning, the flame is yellow on the top and blue at the bottom. Smell of paraffin.
　　Polyoxymethylene (POM): when burning with a light blue flame, while the smell of formaldehyde emissions it will burn, the flame is not easy to extinguish, burning for the same color, the proportion of 1.42.
　　Poly (butylene terephthalate) (PBT): when burning with a blue flame head and orange red flame, light black smoke will drop, the flame violent vibration, the proportion of 1.31.
　　Polystyrene (PS): when burning with orange yellow flame, take a lot of black smoke is not easy to drop, and make the air carbon, the proportion of 1.04.
　　Acrylonitrile butadiene styrene copolymer (ABS): when burning with a yellow flame, black flame and not easy to drop, the proportion of 1.05.
　　Poly (methyl methacrylate) (PMMA): burning slowly with a yellow flame head blue bottom will drop, emitting a fruit flavor, the proportion of 1.17-. 2.
　　Polyvinyl acetate (EVA): when burning with yellow and blue flame head easy to drop, severe vibration flame also released after smell.
　　Polyurethane (PU): yellow flame blue falls, his pale black smoke flame left out.