Duty recovery and interest on noncompliant duty free imports where procurement or export conditions are unmet. Amendments treat duty free goods as also procured from Public or Private Warehouses licensed under sections 57/58, substitute conditions to require execution of bonds and certificates, and impose duty and interest from importation or procurement where goods (capital, non capital, produced/unused, or raw materials/consumables) fail to be installed, used, exported or meet Net Foreign Exchange Earning and Export Performance targets within prescribed periods, while permitting administrative extensions and movement of goods for testing, repair or jobwork under bond.