... of plants, like stationary type, hauling/modular mobile type, tower/container environment-friendly type and special type for high-speed railway, ... Patent No.200520022852.7 ) 6. Adopt additive weighing scale pneumatic conveying equipment,applied for national patent,to measure and ... , self compensation of aggregates drop, scale-owing, alarming and revising of over-scale, on-line modifying formula, data ...