1. Application and material grade. 2. Magnesium content and impurity limits. 3. Particle-size range or mesh specification. 4. Trial quantity and expected repeat-order volume. 5. Packaging, destination and required delivery date. 6. Test-report and safety-document requirements. Our featured grades are 92% passivated magnesium powder and 98.5% magnesium granules with particle size greater than 3 mm. All final requirements are confirmed for each order.