The WCO published its interim report “Explanatory study on a possible strategic review of the harmonized system (HS)” . This is the result of a  survey performed among the economic operator. The explanatory study will be checked, in the following analysis, from a environmental point of view. This is the reason for which, i t will be added a point of the fuels from marine plastic littering. The WCO experts try to understand the questions to be answered and outline the main concepts About the answers, it is possible to list the following ones: How to classify the goods which are environmentally sensistive? How to classify goods considering also the…