The chips are Infineon I presume, the module probably isn't (I don't think they make RAM modules themselves). If you can't find a sticker with a brand name, or a silk-screened name, then it's probably a generic brand that you're going to have a hard time tracking down. Google didn't have anything with that 32wk code or any part of it. Even if you do find it, it may be hard to get any warranty support on it, especially if you don't have the receipt.