广期所：经研究决定，自2025年7月21日交易时起，非期货公司会员或者客户在多晶硅期货各合约上单日开仓量不得超过10000手，非期货公司会员或者客户在工业硅期货SI2509合约上单日开仓量不得超过5000手。

Core Viewpoint - The Guangxi Futures Exchange has decided to implement trading limits on polysilicon futures and adjust the trading limits for industrial silicon futures SI2509 contract starting from July 21, 2025 [1] Group 1 - The daily opening position limit for non-futures company members or clients in polysilicon futures contracts will be set at 10,000 lots [1] - The daily opening position limit for non-futures company members or clients in industrial silicon futures SI2509 contract will be set at 5,000 lots [1]