12-Inch P Type Test Wafer Polished Silicon Wafer. Multiple Diameter Options: Available in 150mm, 200mm, and 300mm sizes to suit various testing requirements. Precise Surface Finish: Polished front and edge surfaces with low surface impurity levels for high accuracy. Customization Capability: Customize material, specifications, and optical coating based on specific customer needs. Strict Quality Control: 100% inspection including visual and function checks with full traceability. Fast Delivery for Stock: Inventory items shipped within 5 working days for immediate project needs. Flexible Shipping Methods: Supports DHL, FedEx, TNT, UPS, EMS, and SF for global logistics. Comprehensive Payment Options: Accepts T/T and PayPal for secure and convenient transactions. Manufacturer Direct Supply: Direct from manufacturer with OEM/ODM services and experienced sales support.