Anti dumping duty determination for Vitamin C: duty set by comparing fair selling price and landed import value to address injury. Investigations of Vitamin C imports from China PR and Japan examine dumping and injury; dumping is assessed by comparing normal value with weighted export price at ex factory level, using petitioner, exporter, importer information and best available data. Landed import value will include customs duties and specified charges; fair selling price is derived from cost of production adjusted for optimal capacity utilisation and a reasonable profit. Anti dumping duty may be recommended up to the dumping margin, or a lower amount if sufficient to remove injury.