Calcium hypochlorite HTH chlorine 65&70 chemical 1.Active chlorine:65~70% 2.Certificate:SGS 3.Appearence:Granule 4.factory Calcium hypochlorite HTH chlorine 65&70 chemical1.Packing and strogaea) Packed in 10kg,25kg, 40kg, 50kg II class drums with PVC plastic bag inside with 5.1 Oxidizing agent mark or 50kg round iron drum.b) To keep away from humidity and direct sunlight, it should be properly ...