On June 18, the SHFE copper 2507 contract closed at 78,860 yuan/mt. If calculated based on the BC copper 2507 contract price of 70,150 yuan/mt, its after-tax price would be approximately 79,270 yuan/mt. The price spread between the SHFE copper 2507 contract and the BC copper 2507 contract was -410 yuan/mt, with the spread remaining inverted and widening compared to the previous day.
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