Q: What does "Clean factory," "VS factory," "ZF factory," etc. that I often see mean?

Q: What does "Clean factory," "VS factory," "ZF factory," etc. that I often see mean?
A: They are accessory factories known for their exclusive top-quality components. For example, the ceramic bezel from Clean factory for Rolex is currently considered the best. I will help you understand everything through a video I'm going to share, but I might offend many sellers in the process...

Video 1

Video 2                                                

After watching the video, you should understand that you need to focus on the quality of the watch itself, examining its details and craftsmanship, rather than blindly paying attention to the "logo sticker."