What are Stepper Motors Used for?

Well, it can perform accurate positioning and synchronous operation without a sensor…

That's right. The other advantage is that it's low cost and compact.
If it's a workshop for the new employees, why don't you introduce some examples of applications along with the features?

That's a good idea.
Stepper motors are used for the drive shaft of precision stages used in electron microscopes and the X-Y axes of inspection equipment, right?
I think it was also a stepper motor that was used in the pick and place mechanism video!

The X-Y-Z axes configuration is also used in 3D printers these days.
3D printers are required to be made smaller in order to be used on desktops.
By using a stepper motor, you can achieve the high precision positioning and space saving required by 3D printers.

So stepper motors are perfect for 3D printers!

Another thing you should not forget is semiconductor manufacturing equipment.
There are many processes involved in making a semiconductor, and stepper motors are used in many of these processes.
There are applications that require precision in microns and applications where one load is moved by two motors, so stepper motors with excellent positioning and synchronization are required.
 
If you want to show synchronization, I'd suggest to show them a demonstration machine for synchronous operation that uses mechanical pencil lead.

They are used in many different places.

For something more familiar, they are also used in surveillance cameras.
Stepper motors are perfect because precise positioning, such as camera alignment, must be achieved in a small space!
It is also important to prevent the camera angle from changing in the wind, so having a holding torque when the motor stopped seems to be a key factor in its adoption.

Thank you for the advice! Now I have more image about the workshop.
Also, I have the impression that many customers use servo motors for positioning purposes.
I wonder how I should use them properly...

You've noticed a good point. Certainly, many of our customers use servo motors.
If it's just for accurate positioning, either one is correct.
However, if you want something small and low cost, we definitely recommend a stepper motor!

Recently, the number of variations of αSTEP which is a stepper motors with built-in position detection sensors has been increasing rapidly, and the range of applications is likely to keep expanding.
  I will explain in the workshop!

Good luck to you!