Special margin preference (hereinafter referred to as "special margin") means that the proportion of trading margin collected is lower than that uniformly collected by the Company, but it shall not be lower than that collected by the Exchange.
If the fund reaches 50,000, you can apply for special protection. As long as you do high-frequency trading and don't hold positions overnight, the risk is not higher than 80%. The minimum handling fee can be 1 gross.