Driven doesn't make chains I don't believe, just sprockets. The 3 is EK,RK and DID, and EK makes the 3D one.
Correct .. Driven doesn't make chain but they partnered up with ek to be their supplier for the chain in their chain kit. Or so I've read .. Which seems very plausible since its on Motomummy as a primary recommendation for chain when selecting the chain kit.