Method for picking up painted panels provided with different dimensions and finishing, characterized in that the panels are inserted in a selective sorting system, the said selective sorting system comprising at least a group (2, 52) of two mobile conveyor sectors which are superimposed one over the other, the said at least one group comprises an upper mobile conveyor sector (2', 52') having a predefined length and a lower mobile conveyor sector (2", 52") having a predefined length the said mobile sectors being provided of a driving motor for the advancement alternatively according to one of two directions and which mobile sectors of each of the said at least a group of two mobile conveyor sectors, further move together in a synchronized manner thanks to a motor and are able to carry out a vertical displacement of lifting and lowering of the said group of mobile conveyor sectors (2, 52); at least a fixed conveyor sector (6, 56); said at least one group of mobile conveyor sectors (2, 52) and the at least one fixed conveyor sector being arranged alternately and placed in series; the said method comprising the following steps: a. Uploading said painted panels (3, 3', 3", 3'") in said selective sorting system; b. Keeping said panels inside said selective sorting system for a time sufficient for their drying or the completion of their drying; c. Withdrawing said panels (3, 3', 3", 3′′′) through an upload and/or download system for preparing a customer order; wherein the said upload and/or download system is provided of a software suitable for - Memorizing the position of the uploaded panels (3, 3', 3", 3′′′); - Actuating the lifting and/or lowering motors of the mobile conveyor sectors and the motors for the advancement of the said mobile conveyor sectors and of the at least one fixed conveyor sector so as to move the panel/s desired to prepare a customer's order, temporarily storing the undesired panels in a buffer formed by the said mobile conveyor sectors, wherein every single motor and each group of mobile conveyor sectors and every motor of the fixed conveyor sectors is actuated independently. the said selective sorting system comprising at least a group (2, 52) of two mobile conveyor sectors which are superimposed one over the other, the said at least one group comprises an upper mobile conveyor sector (2', 52') having a predefined length and a lower mobile conveyor sector (2", 52") having a predefined length the said mobile sectors being provided of a driving motor for the advancement alternatively according to one of two directions and which mobile sectors of each of the said at least a group of two mobile conveyor sectors, further move together in a synchronized manner thanks to a motor and are able to carry out a vertical displacement of lifting and lowering of the said group of mobile conveyor sectors (2, 52); at least a fixed conveyor sector (6, 56); said at least one group of mobile conveyor sectors (2, 52) and the at least one fixed conveyor sector being arranged alternately and placed in series; the said method comprising the following steps: a. Uploading said painted panels (3, 3', 3", 3'") in said selective sorting system; b. Keeping said panels inside said selective sorting system for a time sufficient for their drying or the completion of their drying; c. Withdrawing said panels (3, 3', 3", 3′′′) through an upload and/or download system for preparing a customer order; a. Uploading said painted panels (3, 3', 3", 3'") in said selective sorting system; b. Keeping said panels inside said selective sorting system for a time sufficient for their drying or the completion of their drying; c. Withdrawing said panels (3, 3', 3", 3′′′) through an upload and/or download system for preparing a customer order; wherein the said upload and/or download system is provided of a software suitable for - Memorizing the position of the uploaded panels (3, 3', 3", 3′′′); - Actuating the lifting and/or lowering motors of the mobile conveyor sectors and the motors for the advancement of the said mobile conveyor sectors and of the at least one fixed conveyor sector so as to move the panel/s desired to prepare a customer's order, temporarily storing the undesired panels in a buffer formed by the said mobile conveyor sectors, - Memorizing the position of the uploaded panels (3, 3', 3", 3′′′); - Actuating the lifting and/or lowering motors of the mobile conveyor sectors and the motors for the advancement of the said mobile conveyor sectors and of the at least one fixed conveyor sector so as to move the panel/s desired to prepare a customer's order, temporarily storing the undesired panels in a buffer formed by the said mobile conveyor sectors, wherein every single motor and each group of mobile conveyor sectors and every motor of the fixed conveyor sectors is actuated independently.