Recently, Yiwu Yitech Trading Co., Ltd. made notable progress in semiconductor materials by exporting high- precision molybdenum wafers to South Korea. This partnership opens avenues for the company's products in the high-end semiconductor value chain, establishing the first step toward penetrating the electronic materials market in Asia.
Molybdenum wafers, as a key material for semiconductor power devices, integrated circuit substrates, and LED heat dissipation substrates, require nano-level precision in terms of surface flatness, crystal orientation, and thermal conductivity. The exported wafers utilize a composite process of powder metallurgy and precision rolling, fully meeting South Korean semiconductor enterprise standards in terms of surface roughness (Ra ≤ 0.05 μm), warpage (≤ 15 μm), and oxygen content control (≤ 50 ppm). The customer specifically requested grain size distribution maps and thermal expansion coefficient curves. Yitech confirmed the material's highly consistent (110) crystal plane orientation and excellent thermal stability through electron backscatter diffraction and laser flash testing.
This delivery demonstrates the company's comprehensive capabilities in high-purity metal material processing. The technical team, addressing the characteristics of high-temperature processes in semiconductor manufacturing, innovatively developed a stress-free polishing technology. By combining chemical mechanical polishing and electrolytic polishing, they ensured an ultra-smooth surface while eliminating the processing stress layer. Facing the South Korean customer's stringent requirements for material batch consistency, the company established a process control system based on big data analysis, achieving statistical process control of key parameters for each batch of wafers.
South Korea, as a global hub for semiconductor manufacturing, places great emphasis on both product performance and technological collaboration capabilities from its material suppliers. Through this cooperation, Yitech established a "laboratory to production line" joint debugging mechanism with the customer, developing customized heat treatment solutions for the customer's specific power device models. Notably, this transaction adopted a "verification before mass production" model. The customer initiated formal bulk purchasing only after completing three batches of small-scale trials and verifying a yield rate of 99.8%, demonstrating the deep trust built between the two parties based on technical verification.
