Chlorine dioxide disinfectant,Efficient, Freindly operation, Safety,Low dose,no 2nd polution Chlorine dioxide disinfectant,Efficient, Freindly operation ... one-time set, periodic work automatically.SafetyNon-toxic no residue, no secondary pollutionChlorine dioxide in the air quite a ... can induce cancer of the potential harmful organic compounds or toxic by-products reduced, while their own safety into ...