Group 1 - The company is inquiring about its layout in aluminum nitride powder and substrate sintering, similar to competitors like Xuguang Electronics, which have made breakthroughs in this area [1] - The company's main raw material for metal ceramic is alumina powder, indicating a focus on traditional materials in its product development [1] - The company collaborates with universities to establish a joint laboratory for ceramic research, aiming to innovate in new ceramic materials and expand applications for metal ceramic products [1]