Disposable lunch boxes are used more and more in our lives, and they are still related to the physical objects at the entrance. So how should we buy such important items?
1. Choose a good seal. Generally, the lunch box should be sealed in a plastic packaging bag, and the packaging bag should not be damaged. The loosely packed lunch box is susceptible to environmental pollution, and hygiene cannot be guaranteed.
2. Carefully check whether the packaging label is marked with "product name, manufacturer's name, factory address, product implementation standards, production date, shelf life, sanitation license" and other national regulations must be marked, if the mark content is incomplete or not Standard, then such a lunch box is best not to buy.
3. Observe the appearance of the lunch box. The box body of a good-quality lunch box should be uniform in color and clear in outline, and there should be no obvious dents or wrinkles at the mouth of the box.
4. Look at the mouth of the box. Note that the box mouth is flat and smooth, without waste edges, burrs, the cup body should be clean and transparent, uniform in thickness, free of impurities, bubbles, water marks, and fisheye stiffness.
5. Check the hardness. Choose a meal box with a good body hardness. Try to choose a meal box with thick and stiff walls. When choosing a meal box, use your hands to squeeze gently on both sides of the meal box. You can roughly know the box Body hardness is good or bad.