What company is Biotech? I assume you meant, Biotest
In any case, the best supplement you can use for muscle recovery is protein. There are different types of protein that serve all sorts of purposes. If you are looking strickly here at Biotest here are some examples...
-Surge Recovery, a fast asorbing whey hydrolysate with simple carbs for post workout recovery.
-Metabolic Drive, sort of like a meal replacement. So it will supplement a small meal in between larger meals.
-Grow! Whey, a very versatile protein comprised of both whey concentrate and whey isolate.
There is also casein, which is slow acting, so it would be good for taking before bed. It sort of clots in the stomach which provides a steady stream of amino acids in the blood stream over several hours. As far as the above mentioned proteins (hydrolysate, isolate, concentrate), you can find these at any supplement store. It just depends on when you want to take the protein.
If you had to buy just one for overall use, I would recommend a blend of isolate and concentrate. I personally supplement with milk sometimes too as it naturally has a great macro nutrient profile.
Other than the array of proteins available, creatine is a great supplement too.