PPSC Past Paper Excise & Taxation Inspector Region (LAHORE) Excise, Taxation & Narcotics Control Department 2018 Solved MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsWhen no tariffs are imposed on all imports and exports it is called? Posted on May 21, 2021 by Rana TahirA. Preferential Trade B. Free Trade C. Balance of Trade D. Non-Tariff BarriersShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)