Yup, Mann+Hummel is the parent company of several brands (Mann, Wix, Filtron, Purolator), most still have their own independent assembly plants, but as said, there is some sharing of filters in some production part numbers.(One of the most known is the current switch for Wix made filters for Hyundai/Kia spin on filters, they used to be a separate Wix made in USA product, but now appears to be made in the same plant as OEM Hyundai/Kia filters made by Mann in Korea).