... 40kg,45kg,50kg plastic drum,can be changed according to need. efficient chlorine65% min,granular 100%,no powder,no mixedpackingpacked in ... 45kg,50kg plastic drum,and a 20"container can hold 400-450drums,about 20tons of calcium ... ,Only efficient in this month)paymentT/T,Quantity20000metric tons a year we are a reputed and responsible factory,it will be our big ...