I have not seen chemical guys or Nanoskin products in any shop in Rwp/Isl. Do as Haseeb has said in search book search NanoskinPakistan and ChemicalGuysPakistan all details, prices, products and contact info is given, trusted seller, select your products call or text the guy for online account info for money transfer and you will get those products via courier.
I just go to service station for washing the under carriage of the car after it has driven in rain and mud. No bodywash from them. Search for two bucket method in google or in detailing threads of Pakwheels.
Never do dry dusting, instead use a waterless wash spray of Nanoskin and then wipe out with a mf towel.
Meguiar's is great wax so is nanoskin.