1. Incoming Raw Ore QC (Source Control)
Controlled mining from our own mines in Mongolia. Raw ores with different grades and impurity levels are mined and stockpiled separately.

2. Finished Product QC Before Release (OQC)
Independent inspection batches by weight. Cross sampling from top, middle and bottom of bulk bags for full physical & chemical analysis: CaF₂, SiO₂, CaCO₃, total S, total P, arsenic, moisture and particle size distribution.

3. Warehouse & Pre-Shipment QC (Final Shipment Check)
Segregated storage for different grades with batch tags to avoid mixing-up. Regular stock inspection against damp and quality deterioration. On-site sampling & sealing are available for third-party inspection as requested by buyers.