I am from Qingdao Jimo area. Recommend you a household RO water purifier.
Directly docked tap water can drink pure water. Very simple to install, filter replacement does not need to spend a lot of money, of course, the number of times to replace the internal consumption is also determined by the quality of your local tap water. Generally half a year or a year for a change. It will cost you a few dozen dollars a time.
Our company is called New Dayu Water Technology Research Institute, which is located at No. 653, Lanao Road, Jimo City.
You can come and see it, it is guaranteed to be cheaper than the market price.
There are pictures for your reference. This one is the most suitable for home use.
Of course you can refer to other products, this one is a good one that our customers have used.