Group 1 - The core revenue composition of Yujing Co., Ltd. for the year 2024 is as follows: Metal processing machinery manufacturing accounts for 68.42%, silicon wafer and slicing processing services account for 24.88%, thermal field system products account for 4.72%, and superhard material products account for 1.98% [1] Group 2 - Yujing Co., Ltd. announced that its Deputy General Manager and Board Secretary, Mr. Zhou Boping, holds approximately 590,000 shares of the company, representing about 0.2879% of the total share capital, and 0.2902% of the total share capital excluding shares held in the repurchase special securities account [3] - Mr. Zhou Boping plans to reduce his holdings by no more than approximately 150,000 shares within three months after the announcement date, through centralized bidding transactions [3]