PP: If you see this mark on disposable containers, you should know that this mark is abbreviated as Polypropylene or polypropylene. This symbol indicates that these containers are used for liquids and hot foods when necessary.

PS: Stands for Polystyrene. The use of this type of container for food and hot liquids is prohibited, which many health experts emphasize because these containers become carcinogenic in contact with hot food.

PET: Containers with this mark are made of Polyethylene. These types of dishes are carcinogenic at high temperatures and should not even be exposed to direct sunlight. These containers are usually available in the market in the form of water bottles or sauce packs.