? PVC Futures Margin System The minimum trading margin standard for PVC futures contracts is 5%. The margin for trading new positions is charged according to the trading margin at the time of settlement on the previous trading day. Trading margin shall be managed at different levels. With the approach of the delivery date of futures contracts and the increase of positions, the exchange will gradually increase the trading margin ratio. ? The price limit system of PVC futures is 4% of the settlement price on the trading day before the delivery month and 6% of the settlement price on the trading day before the delivery month. ? PVC futures position limit system PVC futures position limit refers to the maximum amount of speculative positions that members or customers can hold in a contract according to the regulations of the exchange. The same customer has multiple trading codes among members of different futures companies, and the total number of all positions in each trading code shall not exceed the position limit of one customer.