Answer :
Because of its features like low cost it does not get rusted is avaliable in many colours and in various shapes and sizes
Plastic containers are light in weight, easy to handle, do not hurt hands, do not rust, do not react chemically with food items. They are also easy to clean with soap solution and often they are not sticky. They are usually odorless. They can be also made to look beautiful and they can be manufactured in different shapes and sizes.
But when they are used in high temperatures, they give smell.
But when they are used in high temperatures, they give smell.