It is a relatively inexpensive plastic and is widely used in a wide range of products from industrial goods to daily necessities. Although they are easy to process, they are weaker than other plastics in terms of moisture resistance, heat resistance, and mechanical strength, and they also expand and contract, so care is required when handling them.
Commodity plastics are used in everyday life because they are easy to plastic processing and inexpensive.

Below is a list of properties of typical commodity plastics for your reference.

Table of Physical Properties of General-Purpose Plastics