This Tariff Concession Order (TCO 0927032) declares that specified subsea oil and gas well‑head controllers and monitors (Customs code 8537.10.90 — including flow control valves, shuttle valves, power/communication connectors and internal pressure sensors) are goods to which the item in Part III of Schedule 4 to the Customs Tariff Act 1995 (Item 50) applies. It took effect 28 July 2009 and remains until revoked (see s.269P; revocation under ss.269SC–269SD). Importers and customs officials must match the goods to this technical description and tariff classification for the concession to apply.