PDV salt,6.2sq km exploitable underground salt area,exploitble storage of 200000000 tons ISO 9001-2008 output of 2000 tons/ ... salt, PDV salt6.2 sq km exploitable underground salt areaExploitble storage of 200,000,000 tons.Annual output of 900,000 ... .021SO4%0.45F(mg/kg)4.8Ba ≤15.00 IndexPurified Industrial(usage) SaltTop gradeA gradeNacl(%) >=99.1098.5water(%)<=0.300.50Water ...