The bulk of the Driveworks air filters are produced in China, while the majority of Purolators are made in the US or Mexico. I believe that they are a division of Purolator, just made offshore to similar specs. Many of the filters can be compared side by side with their Purolator counterparts and differences are often insignificant, at least visually. The literature on them claims 95% single pass efficiency as opposed to around 96.5% on the Purlator and 99% on the Pure One, but that can be taken with a grain of salt.
The Driveworks alternators and starters are remanufactured in China and come with a one year replacement warranty, as opposed to the Worldwide remans which carry a lifetime warranty and are remanufactured in one of Remy's Mexican facilities. I suspect that the Driveworks are also reman'd in a Remy facility, but have no information to confirm or deny this.