有研粉材：公司业务分为四个板块

Group 1 - The company, Youyan Powder Materials, was established in 2004 and is a subsidiary of China Research Institute of Metal and Materials, which is a state-owned enterprise under the State-owned Assets Supervision and Administration Commission [1] - The company's business is divided into four segments: copper-based metal powder materials, microelectronics tin-based solder powder materials, additive manufacturing powder materials (3D printing), and electronic pastes [1] - The copper-based metal powder materials segment holds approximately 30% market share in China, primarily used in powder metallurgy, diamond tools, friction materials, catalysts, carbon brushes, and heat dissipation devices [1] Group 2 - The microelectronics tin-based solder powder materials segment has a market share of about 15% in China, making it the leading player, mainly applied in microelectronics packaging and assembly, particularly in consumer electronics [1] - The additive manufacturing powder materials segment focuses on producing aluminum alloy powder, high-temperature alloy powder, copper alloy powder, and stainless steel powder, along with high-temperature specialty powders like soft magnetic and MIM powders [1] - The electronic pastes segment, which includes tin paste modules from Youyan Nami, is primarily used in microelectronics packaging and semiconductor assembly, with new products developed including nano-grade copper powder, silver-copper powder, and nickel powder [1]