原油系期货主力合约涨幅有所收窄，SC原油打开涨停板，涨幅收窄至8.1%；燃料油涨幅收窄至7.41%，低硫燃料油（LU）涨幅收窄至5.08%，液化石油气（LPG）涨幅收窄至4.51%。

Core Viewpoint - The main futures contracts for crude oil have experienced a narrowing of their gains, with SC crude oil's increase reduced to 8.1% [1] Group 1: Crude Oil and Related Products - The gain for SC crude oil has narrowed to 8.1% after initially hitting the limit up [1] - Fuel oil's gain has decreased to 7.41% [1] - Low sulfur fuel oil (LU) has seen its gain narrow to 5.08% [1] - Liquefied petroleum gas (LPG) has also experienced a reduction in its gain, now at 4.51% [1]