A domestic power semiconductor enterprise focused on MOSFET chip mass manufacturing previously sourced all thermal oxide wafers from overseas suppliers for years. However, cross-border supply brought persistent operational challenges: fluctuating international shipping schedules, extended lead times, and climbing freight & customs expenses introduced major uncertainty to the client’s continuous production planning. Unexpected delivery delays would easily trigger raw material stockouts, halt wafer processing lines, and raise overall production costs. After rigorous sample testing, factory audit and multi-round performance evaluation, the enterprise officially chose Lewei as its core domestic supplier of thermal oxide wafers to build a more resilient local supply chain.
We manufacture SiO₂ thermal oxide wafers with highly uniform oxide film thickness, excellent surface flatness and consistent material properties, strictly complying with the client’s custom technical specifications for power device fabrication. Every production batch goes through comprehensive quality checks covering oxide layer thickness measurement, surface roughness assessment, defect density scanning and particle contamination inspection before shipment, to eliminate substandard products from entering the client’s production workflow. Reliable local delivery drastically reduces the client’s raw material inventory storage pressure, cuts expensive international logistics spending, and shortens the whole material procurement cycle.
