The first step, look. As we all know, seeing is the first step for us to identify things. When we pick up a mug, look at its appearance and texture. The appearance of a good mug is smooth, bright in color, and whether there is any deformation in the mouth of the mug. The second is to see whether the handle of the cup is upright, if there is a skewed phenomenon, then it proves that the mug is a defective product.
The second step is to listen. To listen to the sound of a mug, we can flick the body of the mug with our fingers. A good mug will make a crisp clinking sound. If the sound is not clear and crisp, you can judge that the mug is made of mixed materials. Similarly, we need to listen to the sound at the junction of the lid and the cup body. If the sound is clear and has a small echo, the quality of the mug is good.
The third step is to touch. Touch the mug with your hand, and feel whether the mug is smooth and whether there are pinholes. If there are no abnormalities, it means that the mug is of good quality.
