In light of the changes in the structure of market participants along the nickel sulphate industry chain this year, with new capacities from some enterprises being gradually released and a dynamic adjustment in the ratio of spot orders to long-term contracts, we will optimize and adjust the weight calculation rules for the current price index to ensure that it more accurately and promptly reflects the real transaction levels of the industry. This adjustment will be based on the latest capacity distribution, changes in contract structures, and the accuracy of quotations, recalibrating sample weights to enhance the representativeness and flexibility of the index. The new weight scheme will take effect on August 26, 2025.