hair dryer / daily use

Long-term use of hair dryers will cause a heavy burden on the hands.
The force applied on the wrist is related to the angle and center of gravity of the air duct and handle.
The angle of products on the market is mostly between 70 ~110.
When blowing the top and the back of the head, the smaller the angle is, the more natural the wrist posture is. When using it to blow the side hair, the larger the angle is, the more convenient it is.
Through studying the three states in the normal using process.Changing the grip mode can make the wrist in the most labor-saving relaxation state.Refine and simplify the optimization of keyboard function.