I want to say here that the lowest price change of aluminum is 5 yuan per ton at present, which means that every price jump is a multiple of 5 yuan or 5 yuan.
Price increase 1% According to the above method, 5 yuan *0.0 1=0.05 yuan *5 tons (per lot) 1000 lot =250 yuan.
That's how the profit and loss are calculated.
It should also be noted that there is also a handling fee. At present, the handling fee for aluminum is about 10 yuan (per lot), which is charged by opening and closing positions (two-way), that is to say, the handling fee cost of aluminum after opening and closing positions is 20 yuan (deducted from your profit and loss).