What we have done is clean old projectors and package them.
We have also added identification labels with QR codes.
By scanning the QR code, you can access a page where the projector and its batch number can be viewed.
In this image, you can see the maintenance of the projector, as well as its cleaning to ensure proper operation.
This image shows the packaging process of the projector using protective film to ensure its safety.
This image shows the placement of identification labels with QR codes for product tracking and control.