Only LME copper trading hours are from 8 am to 2 am, while domestic copper trading hours are only 4 hours during the day. In this case, especially at night, the external market is changing, and the domestic market cannot be changed. It often needs to be opened higher or lower to keep pace with the external market price the next morning.
Therefore, the trend of LME copper in the evening has a great influence on the trend after the domestic opening the next day.
Extended data:
Classification and properties of copper ore;
The raw material of copper smelting is copper ore. Copper mines can be divided into three categories:
(1) sulfide ore, such as chalcopyrite (CuFeS? ), porphyrite (Cu5FeS? ) and chalcocite (Cu? S) wait.
2 oxide minerals, such as chalcopyrite (Cu? O), malachite [Cu? (oh) CO？ ], azurite [2CuCO? Cu(OH)？ ], chrysocolla (CuSiO? 2H？ O) etc.
(3) Natural copper. Copper ore with copper content of about 1% (0.5% ~ 3%) has mining value, because some impurities such as gangue in the ore can be removed by flotation, and the concentrate with higher copper content (8% ~ 35%) can be obtained.
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