High-Purity Quartz Sand for Precision Casting (Investment Casting / Lost Wax Casting) 99.80% Sio2

High-Purity Quartz Sand for Precision Casting (Investment Casting / Lost Wax Casting) 99.80% Sio2. Customizable Impurities: Fe2O3, Al2O3, TiO2, and Moisture Content are fully customizable. Flexible Packaging Options: Standard 1,000- 1,500 kg Jumbo Bags with moisture-proof custom options available. Third-Party Testing: Third-party testing certification is available upon request. Free Sample Policy: Free basic samples (1- 2 kg) are provided; courier fee is deductible after the first bulk order. Full Customization Service: OEM service available with customization from samples, designs, or full specs.