общественного компаниях изредка

public drinker stainless steel water drink hot and cold function compressor cooling,R134a staineless steel body with filter purifier water suit for park,school,square etc public area Five stages filtration: 1)PP filter:remove rust,sand,clay which are bigger than 10mm 2)Activated carbon:remove organic,heavy metal particle 3)Block activated carbon:pesticide,floating substance,remnat chloride 4)The Ro membrane:remove dissolve salt,heavy metal,bacterial larger than 0.0001um and the desalinatins is more than 97% 5)The small carbon:adjust the water PH value,make the water taster better