5月16日电，郑商所：经研究决定，自2025年5月19日当晚夜盘交易时起，烧碱期货2509合约的日内平今仓交易手续费标准调整为成交金额的万分之零点五。

Core Viewpoint - The Zhengzhou Commodity Exchange has announced an adjustment to the trading fee for the caustic soda futures contract 2509, effective from the evening session of May 19, 2025, setting the intraday closing position trading fee at 0.0005 of the transaction amount [1] Group 1 - The adjustment in trading fees is aimed at enhancing market liquidity and trading activity for caustic soda futures [1] - The new fee structure reflects a strategic move by the exchange to align with market conditions and participant feedback [1]