Stuff like this is defintely loved by the VW crowd (had a GTI before the FiST, so I know...). But it's loved because cheap and MOAR LOWZ!!1!1! What does "fully adjustable" mean to you? Have you seen a plot of how these react throughout their adjustment range on a shock dyno?
First thing that tips me off that these are junk is right there in the description:
"-32 Step Damper Adjustable
-Precise control damp valve, Operates smoothly on all road surfaces
-Expansion/Suppression of shock adjustment
-Height and low adjustable, Superb road holding qualities and great looks
-Single Cylinder, or Mono-Tube Design, with Larger cylinder and piston design, advances driving stability and dexterity
-ARTC Durability Test & Salt Spray Fog Test, Guaranteed with Top Quality Material and Long Durability"
"Damper adjustable?" That doesn't mean anything. What does the adjuster do? Low speed rebound? High speed rebound? Low speed compression? High speed compression? At worst, "fully adjustable" would mean low-speed compression/rebound adjustable, through two discrete knobs with little/no crosstalk.
"Precise control damp valve, Operates smoothly on all road surfaces" A damp valve? Uh....
"Expansion/Suppression of shock adjustment " Another meaningless google-translated nonsense term. Expansion/suppression probably means rebound/compression, but it still makes ZERO sense.
Don't. Just....don't.