Affected by regulatory policies, ICBC has set upper and lower limits on the total net transaction amount of all customers buying and selling crude oil in RMB. Total net transaction refers to the net difference between the total amount of crude oil bought by all customers in RMB accounts and the total amount of crude oil sold in RMB accounts. When the net amount reaches the set upper or lower limit, ICBC has the right to restrict all customers from opening new positions, but the customers' liquidation of crude oil in existing accounts is not affected.
Following the usage convention of crude oil product measurement units in the international market, the trading unit of crude oil products in ICBC account is "barrel" (about equivalent to 158.9873 liters per barrel), the initial quantity of a single transaction bought and sold by customers is 0. 1 barrel, and the incremental unit is also 0. 1 barrel.