... ., LTD(0086-797-5745599 ) are productionIt is widely used in the industry of the metallurgy, mining, chemical, construction, plant ... Trough feeder is applied in the primary crushing as the equipment of the feeder. It is widely used in the industry of the ... the pumping of 20-60 times / min, stroke is 20-200mm. Stroke can be adjusted appropriately eccentric device, eccentricity of stroke in half. ...