Yes – USB-3 is suitable for sulfur polymer / sulfur-modified PMB, provided the unit is ordered/configured with the sulfur dosing (input) assembly and the recipe is run within the correct temperature window for your sulfur/polymer system. GlobeCore’s USB-3 is described as capable of implementing «virtually any bitumen modification process» using a wide range of modifiers and additives, and their configurator explicitly lists a Sulfur input assembly as an available option. Capacity depends on the USB-3 version, but typical industrial configurations are in the 8-12 m³/h range (and higher on other variants), while sulfur addition is treated as an additive stream inside the standard continuous process.