... drum: 1kg, 5kg, 10kg, 25kg, 40kg and 50kg, Europe and USA style drums are available. Fiber drum: ... and spas, preventing and curing diseases in husbandry and fisheries, fruits and vegetables preservation, wastewater treatment, algaecide for recycling water of industry and air ... conditioning, anti shrink treatment for woolen, treating seeds, bleaching fabrics, and organic synthesis ...