1. Touch. The surface of polyethylene plastic toy is relatively smooth, the texture is softer, PVC feels hair, Teflon is non-toxic and feels smoother; ABS non-toxic, feel more hard.
2. Burning. Polyethylene non-toxic, the flame is yellow when burning , burning like wax sense (like candles melting wax drops), while PVC poisonous, burning flame is yellow with green.
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