Get a guided demo of the BSP ultrafine grinder for rice powder production. Watch how material feeds into the air inlet, passes through the built-in classifier, and recirculates until the target fineness is reached. See the compact design, simultaneous crushing and grading, and continuous heat dissipation for heat-sensitive rice. Learn how to adjust fineness from 60 to 2500 mesh and match capacity across BSP-350, 450, 500, and 750 models. Includes practical workflow and troubleshooting tips.