How to reduce the noise of metal mouse pad?

I just checked many reviews of aluminum mouse pad or metal mouse pad. Everyone complains the noise is too big or unbearable. The user Jason said:"Better than cloth in a lot of ways, but I don't like the "scraping" "A nice mouse pad but the noise it makes when I move my mouse around on it is unbearable" said by Squirrelman. . I talked to our engineer about the complaints of noise and ask "how to reduce the noise on metal mousepad?" He said it's simple. Try to reduce the friction of between the mouse