London Metal Exchange (LME) is the largest non-ferrous metal exchange in the world. The price and inventory of LME have an important influence on the global production and sales of non-ferrous metals. /kloc-In the middle of 0/9th century, Britain was the largest producer of tin and copper in the world. With the passage of time, the industrial demand is increasing, and Britain urgently needs to import a large number of industrial raw materials from foreign mines. At that time, due to the irregular arrival time of freighters crossing the ocean to transport ore, metal prices fluctuated greatly, and metal traders and consumers were faced with great risks. 1877, some metal traders established the London metal exchange and established standardized trading methods. Since the beginning of this century, the London Metal Exchange has publicly released its trading price, which is widely used as the quasi-price of world metal trade. 70% of the global copper production is traded according to the official quotation published by the London Metal Exchange.

During the working days every week, the trading hours of non-ferrous metals on the London Metal Exchange are as follows: Greenwich Mean Time 1 1:40, and the early trading begins; Each trading variety takes turns trading for 5 minutes. 12: 20, rest for 10 minute after all eight metals are traded in sequence; 12:30, the second trading begins in the morning, and the varieties are still traded in sequence for 5 minutes. Because the transaction on the second floor in the morning determines the official settlement price of the day, it has special significance.

After the formal settlement price quotation, that is, around 13: 15 in the afternoon, the off-exchange price began to trade until 13:30. During this period, eight metal varieties were traded at the same time. After the off-exchange price closes in the morning, the on-exchange transaction ends and the transaction is transferred indoors.

The second trading of London Metal Exchange started at 15: 10 in the afternoon. The on-site trading in the afternoon is similar to that in the morning. After the end of 16:35, the OTC trading will be conducted immediately until 17:00, * * * lasting for 25 minutes. The difference between morning trading and afternoon trading is that there is no official settlement price for afternoon trading. (/futures/HY2.asp)