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What is the difference between London copper, comprehensive copper and London copper now?
London copper is also called LME copper (LME is short for London Futures Exchange). The futures trading of copper began at 1877, and there are two kinds of copper traded: cathode copper: A-grade copper bar: the specification standard is A-grade copper with the weight between1/kloc-0-125 kg. Among them, the trading of cathode copper is the most active. All delivered copper must be Grade A copper recognized by the London Stock Exchange, and conform to the British BS6017-1981standard classification specification. The contract rules of grade A electrolytic copper are: the contract quantity unit is 25 tons, the lowest fluctuation range of USD/ton quotation is 0.5 USD/ton, and three months is any trading day. The third Wednesday of every month is three to fifteen months. Trading hours are 2:00- 12:05, 12:30- 12:35 (official quotation), 15:30- 15:35,/kloc-.

Different from other exchanges, the LME three-month futures contract is a continuous contract, so it is delivered every day. LME has set a lower limit for discounts in spot copper. The spot discount for March copper should not be less than $30. On the contrary, the spot premium can be unlimited. In addition, LME has no price limit.

Trading Grade A copper includes both on-site price and off-site price, so it is called synthesis. Generally speaking, these two prices can be called bidding disk and electronic disk. The bidding is conducted in LME, and the daily trade will be divided into six time periods, and the six time periods will be combined into one price, which is the price of 3 London copper we see. When there is no trading in the venue, there will be electronic disks to continue trading, so there will be a second difference: 3 comprehensive trading is all day, and 3 London Copper will have trading time restrictions.

The copper in London now is the price after the increase and discount!

There is no fixed place for the trading of comprehensive copper. Computers with internet access can join the comprehensive copper transaction. London copper has a fixed trading place! London copper and comprehensive copper are available on and off the court.