Group 1: Platinum Market Insights - The surface inventory of platinum is only 100 tons, and it is expected to be depleted by 2028, leading to a strong price recovery due to tightening supply and demand dynamics [2][3] - Since 2011, platinum prices have been in a downward trend, but recent increases in jewelry and investment demand, along with a recovery in automotive demand, suggest a potential upward cycle for prices and consumption [2][4] - Key domestic downstream companies to watch include specific listed firms, while overseas mining producers are also highlighted as potential investment opportunities [3][4] Group 2: 3D Printing Market Opportunities - The consumer-grade 3D printing market is projected to reach $7.1 billion by 2028, driven by AI empowerment and supply chain cost reductions [6] - Consumer-grade 3D printers are designed for individual users and small businesses, with applications in various sectors such as consumer goods, education, and cultural creativity [6][8] - Investment opportunities in core components and materials for 3D printing are emphasized, with specific companies recommended for attention in the hardware, scanning, and materials sectors [7][9]