Where to find a van to pudong airport?

I am flying internationally from PVG and I have a lot of stuff to bring with me to the airport (at least 4 large pieces of luggage, about 30kg each plus two medium boxes). I was wondering where can I find a Van service that is able to take me and all my luggage from Changning District to PVG charging a reasonable price. As I am travelling alone with so many luggage, subway, taxi or shuttle bus wouldn't be a smart idea I think. Thanks!