How to distinguish plastic from recycled plastic?

How to distinguish whether plastic is recycled plastic?

The easiest way to distinguish between new materials and recycled materials is:
1. Point the plastic film towards the sun to see if there are star points on it. Usually some are recycled, and basically there is no new material.
2. The color of the recycled materials is different, the hand feel is different, and there are many impurities, the color is not good, and the natural color is less.
3. From the appearance, the recycled plastic has poor gloss, the surface of the particles is dull, the size is uneven, contains impurities, and is generally colored or gray;
4. The new material has good gloss, smooth surface, uniform size, no magazines, and mostly colorless or milky white. The new material is bright in color and the old material is dim in color.