Abstract: A mobile-module plant (1) for the development and the production of biotechnological products on a pilot scale comprising equipments for the production, separation, purification and finishing of said products (11, 17, 18, 19, 20; 40, 47, 48, 50, 52, 54; 71-76, 82, 86, 89, 92, 95, 98) and auxiliary equipments (102; 107, 109, 110; 112; 113; 119; 123; 129; 134; 135; 141-143), wherein (i) the plant (1) consists of at least two mobile modules (2; 3; 4; 5; 8) suitable for being connected together and integrated one with the other. Each of the mobile modules (2; 3; 4; 5; 8) comprises a movable container (6). At least one of the movable containers (6) is provided with a preselected own set of said equipments (11, 17, 18, 19, 20; 40, 47, 48, 50, 52, 54; 71-76, 82, 86, 89, 92, 95, 98; 102; 107, 109, 110; 112; 113; 119; 123; 129; 134; 135; 141-143). At least one of the movable containers (6) is aseptic.