After years of use, plastic boxes will inevitably age, and some have even reached their service life. If you continue to use this type of plastic box, it will cause damage to the loaded items at any time and need to be replaced in time. So how can we quickly judge whether the plastic box is aging?
The first method can be judged from the color. When the color of the appearance of the plastic box becomes dark or the surface is whitish like powder, it can be determined that the plastic box has aged to a certain degree and needs to be replaced with a new one.
The second method can be judged from the toughness. When we lightly press the wall of the box, if it is elastic and does not crack, then it has good toughness and can continue to be used; if the box is not elastic, brittle and cracked, then the plastic box is aging The degree is already serious and can no longer be used.
