Is it cheating to sell drinking water purifiers in the countryside?
Because the water purifier for this kind of thing, life is short, if the water quality is poor, may need to be replaced several times a year and you have to filter, the filter can purchase again, such as water, then boil drinking it, no need to spend money to buy water purifier
A look at whether products are not counterfeit counterfeit products, if it is a regular manufacturers, national certification, then consider whether you really need a water purifier
See what the other side recommended is the brand, what type, there is no relevant departments of the approval, whether the three noes products, do not blindly buy
