Group 1 - The main crude oil futures contract at the Shanghai International Energy Exchange experienced a slight increase, closing at 574.5 yuan, up 0.30% or 1.7 yuan, with a trading volume of 422,702 contracts and an increase in open interest by 2,449 contracts [1] - On June 21, the WTI July crude oil futures closed at $74.93 per barrel, down $0.21 or 0.28% [1]

Group 1 - The main contract for crude oil futures at the Shanghai International Energy Exchange experienced a significant drop, closing at 518.6 yuan, down 9.00% or 51.3 yuan [1] - Trading volume increased to 526,467 lots, while open interest decreased to 42,731 lots, with a reduction of 929 lots in the day session [1] - The overnight Brent crude oil main contract fell by 8.37%, settling at 69.16 USD per barrel [1]

Group 1 - The main contract for crude oil futures at the Shanghai International Energy Exchange experienced fluctuations and closed lower, with a decrease of 1.10% or 5.5 yuan, settling at 496.7 yuan [1] - Trading volume increased significantly, reaching 238,738 contracts, while open interest decreased by 1,891 contracts to a total of 30,055 contracts [1] - On June 28, the WTI crude oil futures for August rose by 0.43%, closing at 65.52 USD per barrel [1]