Core Insights - China Haisum (002116) reported that its engineering business in the new energy materials sector includes semiconductor materials and lithium battery materials, with new engineering service contracts signed in this field amounting to approximately 3.22 billion yuan over the past three years [1] Group 1 - The company specializes in new energy materials, particularly in semiconductor and lithium battery materials [1] - The total value of new engineering service contracts in the new energy materials sector over the last three years is around 3.22 billion yuan [1]