In order to enhance the index investability, Shenzhen Securities Information Co., Ltd. decided to revise existing index methodology. The details are as follows:

CNI Oil&Gas Index: (1) Revise the number of constituents to 50; (2) Adjust the weighting method to “The weight of individual constituent of oil and gas exploration and production, oil and gas equipment and service no more than 15%, the weight of other individual constituent no more than 3% and the total weight of the top 5 constituents no more than 60%”.