99.999% High Purity Silicon Pellet for Vacuum Coating, CAS 7440-21-3, ISO9001, Custom Size 1-12mm, E-Beam Evaporation Semiconductor Thin Film. 99.999% High Purity: Ensures excellent film uniformity and low impurity content for semiconductor applications. Custom Particle Size: Available in 1-12mm range to meet specific equipment requirements. ISO9001 Certified: Manufactured under strict quality management system with SGS test reports. Low Oxygen Content: Guarantees stable evaporation performance and high film quality. Versatile Applications: Ideal for semiconductor, optical, medical, and electronics thin film deposition. Fast Delivery: 7-15 days delivery time after order confirmation with professional export packaging. Vacuum Sealed Packaging: Ensures product integrity during shipping with plywood box protection. Factory Direct Price: Competitive pricing with optimized manufacturing control and low scrap rate.