The customer needs to invest in limestone sand making, mainly producing machine-made sand below 5 mm. The project is also equipped with auxiliary equipment such as powder selectors and wet mixers to ensure that the production process meets environmental protection requirements. This sand production line first uses a vibrating feeder to send the material to a single-rotor sand making machine to process it into finished machine-made sand of the specifications required by the customer, and then screens and uses a powder selector to separate and process unnecessary stone powder and valuable finished sand, thereby obtaining reasonable finished sand and gravel.