"Sunmight" shows the high abilities(such as the durability and the ability of abrasive) pursued in a sandpaper.
We use not only the original backing which was developed specially ,but also the durable aluminum oxide.
And moreover the aluminum oxide has been fixed to the backing by the original technology of coating
So,"Sunmight" provides the good performance of sanding to you.
Please try "Sunmight", if you have not yet used.
Sunmight Film & Paper
Explanation of Sunmight
The catalogue of Sunmight