Long-term look for stable supplier of Chromium ore sand , Zirconium Sand, Manganese ore.
Such as India and South Africa Chromium ore sand goods:

South Africa ore
Cr2O3：46%MIN
SiO2：1.0%MAX
CaO: 0.5%MAX
Fe2O3: 28-29%
Al2O3:16%MAX
MgO:11%MAX

India ore
Cr2O3：48-50%
SiO2：7.0%MAX
CaO: 0.5%MAX
Cr : Fe = 2.6 : 1
Al2O3:13%MAX
MgO:11%MAX