The ZDHC acronym for Zero Discharge of Hazardous Chemicals was born to achieve the goal of eliminating the discharges of harmful chemicals. To support companies in the elimination of hazardous chemicals, the ZDHC has drawn up a list of substances whose manufacture must be eliminated or limited (MRSL acronym for Manufacturing Restricted Substances List) and continuously updates guidelines and protocols on compliance guidelines. ROADMAP TO ZERO. For the publication and sharing of data, A.CHI.MO. has registered on the ZDHC gateway, where it is possible to view its products at the various compliance levels.