Yes, liquefied petroleum gas futures have an outer disk. Liquefied petroleum gas is an important energy product, and there are liquefied petroleum gas futures transactions in the international market. External market refers to futures exchanges in foreign markets, such as Chicago Mercantile Exchange (CME) and London International Derivatives Exchange (ICE). In these exchanges, investors can buy and sell LPG futures through the platforms provided by the exchanges. Investors can formulate investment strategies according to the market information of the external market and participate in LPG futures trading in the international market.