Pay attention to identifying inferior products

From the color point of view, qualified products have uniform color and fine texture;

However, the color of unqualified products is dark, and the color is uneven. Some fluorescent substances are added, and the color looks white and not very natural.

In terms of taste, qualified products basically don't have much taste;

Inferior products basically have a larger peculiar smell.

In terms of feel, qualified products are relatively soft and not easily broken when kneaded by hand;

The surface of unqualified products is relatively rough, and the flexibility is poor, and the products are easily broken when they are repeatedly folded in half by hand.

Pay attention to the use temperature of different material lunch boxes

The lunch box made of PS is hard and easy to break. It is suitable for storing refrigerated food. It is not suitable for heating food in a microwave oven.

The lunch box made of PP has good heat resistance, and the melting point is about 170 degrees Celsius. It can be heated in a microwave oven.

However, it is worth noting that in order to save costs, some businesses use different materials for the lid part of the lunch box, so check if there is a PP logo on the lid.

Note that different food ingredients have requirements for lunch boxes

High-fat and high-sugar foods are not suitable for plastic lunch boxes.

Because the boiling point of oil easily exceeds the heat resistance limit of plastics, chemical substances such as oil, sugar in food and plasticizers in lunch boxes are prone to chemical reactions, causing toxic substances to migrate and causing human damage.