Aldi, Lidl Stiftung & Co. KG & Co. : Who makes beer for discounters to Germany

Bread, coffee, cold appetizers, sweets: numerous noname-products of supermarkets and discounters are made by branded brands. It, of course, pleases buyers as products turn out not one taste worse, but is much cheaper. Who makes for Lidl Stiftung & Co. KG? Beer of companies is presented to "Perlenbacher" to Lidl ("Perlenbacher Premium Pils", "Perlenbacher Pils", "Perlenbacher Hefeweißbier", "Perlenbacher Gold-Pils", "Perlenbacher Radler", "Perlenbacher Radler Alkoholfrei") and "Grafenwalder" ("Grafenwalder Pils", by "Grafenwalder Pilsner", "Grafenwalder Radler", "Grafenwalder Wild Orange/Lemon"...