How to check the quality of an umbrella?

When checking the quality of an umbrella, pay attention to the following points:

1.The umbrella surface is full and there is no debonding.

2. After 5-6 consecutive activations, the support shoulder should not fall off and the support key should be solid.

3. The handle, stem, bone and surface should be intact and the coating parts should be smooth.

4. The fabric should have strong rainproof performance and the nylon umbrella surface should be airtight.

5. The automatic umbrella opening button should be flexible; it should not open automatically if it is gently shaken.