... so on a series of advantages, instead of manganese steel plate, stainless steel, steel grit, concrete used for lining, funnel ... so on a series of advantages, instead of manganese steel plate, stainless steel, steel grit, concrete used for lining, funnel ... sand, ore, carbon powder funnel lining and grinding chenban, filling (grey) measures, coal mine chute, concentration pool spindle collar and leaf ...