FYI Lemmforder is part of ZF Friedrichshafen Group major OEM that makes ZF transmissions, Sachs clutches and struts, ect. If the parts are genuine they are top quality, but it IS possible that they are knockoffs especially if it has China printed on it. It is NOT uncommon to see geniune OEM parts with the car maker stamp scratched off, because they are overruns and cosmetic defects that won't pass car maker QC inspections but are perfectly fine working parts and can be had at a large discount.
A lot of times car makers will have at least two vendors to supply parts (reason being if there is a problem with one brand they simply switch to the other). So it is not uncommon to see one part number with TWO or THREE vendors producing it.