JML can internally develop and produce complete systems for the preparation, transport, storage, and dosing of sand for core production. The mixer with its automatic additive dosing system, the pneumatic transmitters with low air and pressure consumption so as not to alter the characteristics of the product, the hopper loading trolley above the core making machines, are managed by tested control and supervision systems which allow the correct monitoring of the different preparation phases and at the same time guarantee the best quality of the sand.