How to distinguish plastic products?
there is one thing that is very common in our lives, that is--Plastic! Nowadays, the use of plastics is becoming more and more common, which brings great convenience to our lives, but at the same time it produces a lot of garbage; On the other hand, improper use of plastic products may also cause harm to human body. There are seven kinds of common plastics, not each of which is safe. Below, I want to tell you how to distinguish different plastic products.