We are pleased to propose the 2nd Workshop on Sequential Infiltration Synthesis (SIS 2020) that will be held online on December 14-15, 2020. The workshop will include two half days of talks and discussions from 3 pm to 6 pm (CET, Rome time). Registration will be mandatory but no conference fee will be charged. For more information please contact info-sis-2020@mdm.imm.cnr.it