1.Certified: HACCP, GMP, USDA NOP, ECOCERT, HALAL, KOSHER, ISO 2. Cold Pressed/Solvent Extracted/Refined 3. GLA 9%,9.5%,10% Evening Primrose Oil Evening primrose originates from Mexico and Central America, now grows abundantly in northeast of China. Evening primrose oil contains large amounts of omega-6 series of unsaturated fatty acid, which, as medical research shows, has remarkable effects on ...