Core Viewpoint - The Guangxi Futures Exchange has announced significant regulatory adjustments for futures contracts related to industrial silicon and polysilicon, including increased margin requirements, transaction fees, expanded price limits, and reduced daily trading limits [1][6]. Group 1: Regulatory Changes - Starting from July 25, 2025, the daily opening position limit for the industrial silicon futures contract (SI2509) and polysilicon futures contract (PS2509) will be set at 3000 lots each [1][3]. - The daily trading limit for both contracts will restrict the total amount of buy and sell positions combined to 3000 lots per trading day [3][4]. Group 2: Historical Context - The adjustment follows a previous implementation of a daily trading limit policy for polysilicon on July 21, 2025, which set a limit of 10,000 lots for various contracts [4]. - Other futures contracts have also seen adjustments in their daily opening position limits, with various limits set for different commodities, indicating a broader trend of regulatory tightening across the futures market [4][5]. Group 3: Purpose of Adjustments - The restrictions on daily opening positions are aimed at curbing excessive speculation and preventing market manipulation risks within the futures market [6]. - Traders are advised to stay updated on changes in trading rules to avoid disruptions in their trading activities [6].