Shanghai Futures Exchange imposes trading limit for gold, oil and copper futures
"As of April 12, 2024 (i.e., since the continuous trading session on the evening of April 11, 2024), INE will implement the trading limits on the crude oil futures contracts. The maximum intraday position opening volume of a Non-Futures Firm Member (Non-FF Member), Overseas Special Non-Brokerage
Typically, it suggests the minimum contract size that can be traded on the exchange.