This caddy should fit at least for the following Huawei Systems:
To my knowledge there is currently only one type of LFF caddys huawei produces, so the should also work on other systems. For mounting the disks you need some 3.5" HDD screws with a small head like these: https://www.amazon.de/sourcing-map-100Stk-Kreuzschlitz-Schraube/dp/B01MSKSTED
The author marked this model as their own original creation.