Not every drinking water purifiers can be installed exactly as you would want to. The reason is that a hole is needed for the separate small faucet driving the purified water on the counter. Not all landlords agree to install an extra faucet on their counters.
In such cases, our solution is to replace the initial kitchen faucet with a new 2 handled faucet. The small one will supply purified drinking water while the big one will still provide tap water.
The new faucet costs 1500 rmb. Exchange service will be provided for free for the first time. If you need to move out and put the old faucet back, 200 rmb will be charged for the service.