This Tariff Concession Order (TCO 0509606) makes imported goods classified at tariff code 8438.60.00 — “dippers, pump, foodstuff” with chemical mixing tanks and dosers — eligible for the customs treatment set out in Part III, Schedule 4 item 50 from 20 July 2005 (made under s.269P, revocable under ss.269SC/269SD). Mechanically, it changes how those specific imports are treated at the border (affecting duties or concessions). Importers must correctly classify the goods to claim the concession; the delegate’s decision and possible revocation affect administrative discretion and revenue.