Aluminum Silicon Powder 441 551 3303 5503 2201 1101 97. Customizable Grinding Sizes: Grinding sizes can be processed according to customers' specifications. High Annual Processing Capacity: Factory has an annual processing capacity of 50,000 tons. Strict Quality Control: Compliance with ISO9001 standards and advanced ICP inspection equipment. Wide Range of Silicon Grades: Available grades include 1101, 2202, 3303, 411, 421, 441, 553, and 97%. Versatile Industrial Applications: Used in steelmaking, aluminum making, deoxidizer, and semiconductor industries. Professional Logistics System: Ensures safety and fast arrival of goods with professional logistics. One-to-One Customer Service: Reliable personalized service and sustainable stable supply. OEM and ODM Services: OEM and ODM services are available for custom requirements.