Rotary drum granulator fertilizer machine is the bestfertilizermachine in the npk compound fertilizer production line. rotary drum granulator machine can process the high-qulity npk compound fertilizer with energy-saving, which production capacity can reach 1.5-50 million tons/ year, so it is suitable for the large scale compound fertilizer manufacture. this compound rotary drum granulator has been widely used in many countries in breeding industry and fetilizer manufacturing industry. if you have any question please explore bestfertilizermachine.com. we will give you the satisfing service.