Laboratory sand mills are specially designed for research and development to meet the needs of small batch R&D testing of materials ranging from several kilograms to tens of kilograms. The equipment is flexible and simple, and has all the performance of large-scale production line equipment. The experimental results can be scaled up to the production line in equal proportions. With cumulative sales of hundreds of units, it has established cooperation with many new energy companies, scientific research institutions, universities, etc., and has been widely praised by customers.