From what I understand, most of these are generic products that each company puts its brand on. It seems and probably is identical to the corresponding Raidsonic one, just 10-15€ cheaper. It gives a sense of sturdy construction. Easy installation, includes everything needed in the package. Adjusting the arm for the weight of the screen is also easy. The screen I installed is not heavy, so it obviously holds it without difficulty. No problems so far.

Edit: It is 100% identical to the corresponding Raidsonic (IB-MS503-T) which costs an extra 10-15€ for exactly the same product.
Tip: Add 1-2 drops of thin oil (sewing machine type) - I used silicone - on the 3 main joints and the movements will become much more comfortable and smooth.