No products in the cart.
What the PP Plastic Code Actually Means (And Why It Matters)
When you pick up a plastic container and turn it over, you’ll see a circular triangle made up of three arrows, with a number printed in the center—it could be 1, 2, 3, 4, 5, 6, or 7. The number 5 represents polypropylene (PP). This seemingly simple code carries the deep logic of materials science, […]
