For each kind

Some enterprises are subject to their own business restrictions, and there will be a period of time for a year to stop production and production, and their share prices will mostly fall during this period. In order to avoid losses caused by the fall in share prices, we can purchase some other stocks that start and stop work on a strategic low ground to compensate for the loss of share prices.

The three is to choose the opportunity to buy and sell.

Based on the historical data of stock price change, the standard error is calculated and used as the general standard for the timing of the election. When the share price is below the standard error limit, the stock can be purchased. When the stock price is above the upper limit of the standard error, it is best to sell the stock on hand.

The four is to pay attention to the investment period.

The operation of enterprises is often cyclical. When the economic climate is good, the stock market pactions are active. When the economic climate is bad, the stock market paction will inevitably wither.