It gets a little confusing. Bilstein shock absorbers are a part of ThyssenKrupp Technologies AG, one of the huge companies in Germany and the world. Bilstein shocks are usually considered to be one of the best.
Febi-Bilstein is an old German company but completely unrelated to the Bilstein shock absorber business. They use parts from everywhere, some good, some bad, some not too bad.
But sometimes, things change and it can be confusing. Looking at the website you posted, it lists TRW brands as a sometimes good, sometimes bad maker of MB parts. Since 2011 when this was posted, the TRW auto parts brand has been purchased by ZF and ZF is one of the more respected German companies. A couple of years ago, I bought front end parts from the MB Classic Center and they had TRW marking on them.
I guess you almost have to check on the latest to know what to buy and what not to buy. Except maybe URO. I never heard anyone recommend URO!
I find the Classic Center to be the most reliable supplier of MB parts. And sometimes they are not as high as most people think.
