The restricted items include equipment used to make aerospace parts and engines, gas turbines – which can be used in warships and tanks – as well as key components for bulletproof vests. 受限制的物品包括用於製造航空航天零件和發動機的設備、可用於軍艦和坦克的燃氣渦輪機以及防彈背心的關鍵部件.