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Zhengyuan is China powder grinding mill manufacturer, offer jet mill, impact mill, ball mill, roller mill, plastic pulverizers. We also provide accessories for powder grinding equipment, like air classifier, dust collector and rotary feeder. We offer fine grinders for different uses, such as for grinding large quantities of material, superfine grinder mills for grinding sample material and.Hard metal. Hard metal balls (tungsten carbide, stellite ), they are characterized by excellent wear, abrasion and collision resistance. They can be manufactured with high dimensional precision. Main application are in flow meters, special bearings, tool machines, sliding rails, precision measurement instruments, naval, mining and petrol industry.