1. Recently, refinery maintenance has increased, and the increase in futures prices has greatly exceeded the spot increase. High profits will attract refineries to shorten maintenance time and increase load production.

2. Liquefied gas futures prices affect liquefied gas futures prices, and liquefied gas futures prices affect futures prices. Price changes will affect the future price of liquefied gas.

3. Domestic LPG is mostly by-product gas from refineries, and its output accounts for 2%-5% of crude oil input. The fluctuation of crude oil price directly affects the price of liquefied petroleum gas.