Water purifier, cold water in the mouth of direct drinking?
The ultrafiltration membrane is too tight to filter bacteria. For water purification equipment, I recommend it to you
There are many kinds of purifiers, the reverse osmosis membrane can reach the standard of straight drinking, his filter precision is 1/10000, bacteria and impurities can be filtered out
Not necessarily. You have to look at what brand. His filter is made up of those
