In the general ledger information of the taxpayer at the tax end. When the product oil inventory received by the product oil distribution enterprise is wrong or surplus, the unused product oil inventory in the golden tax plate can be returned to the ledger information of the taxpayer at the tax end through this function. Refined oil inventory refers to the necessary refined oil reserves that enterprises must set up in order to make production activities normal and uninterrupted or meet customers' ordering needs in time.