General industrial index deposits of boron in the table below. China's boron deposit industry indicator table Industrial indicators Deposit type Boundary grade B 2 O 3 ,% Industrial grade B 2 O 3 ,%, Available thickness m Clip stone Except thickness m Ore grade division B 2 O 3 ,% Level I Level II Boron, magnesium quarry ≥3 ≥5 1 1 to 2 >11 >5~10 Boron and magnesium iron ore ≥3 ≥5 1 1 >9 >5～9 Salt Lake Boron Mine Solid boron ore layer 1.5 2 0.3 0.6 Brine, intercrystalline brine 400mg/L 1000mg/L Pulley Conveyor Pulley,Belt Pulley,Conveyor Belt Pulley,Drive Belt Idler Pulley SHIJIAZHUANG VITURE IMPORT AND EXPORT TRADING CO.,LTD ,