Bought and installed. There is no free installation in our city, since there is no representative office and therefore there is no warranty repair (Hong Kong), and through the point of sale it will be long. Water began to ooze immediately from the inside, in the region of the 2nd cartridge. A few drops per minute, but it's enough to fill everything under the sink overnight. I opened the block with connections and found a leak from the "quick connector" connection (there are a lot of them, a fee for compactness), it spontaneously "slipped" under pressure (poor quality of the quick connector). Also, after inspecting all connections, I found that one connecting tube was cut lengthwise during assembly and also leaked. Total. *I do not recommend this model. Due to poor-quality connections, there may be a leak and damage to expensive furniture. There is clearly no quality control and leak testing at the assembly.
To supplement my review, I have attached some photos that show the highlights of my experience.
Filter under the sink Aquaphor OSMO-Crystal 50 version 4M with reverse osmosis white
39 Review
Filter under the sink Geyser Allegro M with tank
58 Review
Water pump Xiaomi Xiaolang TDS Automatic Water Supply white
133 Review
Filter under the sink Geyser Standard for hard water white
36 Review
NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review
NANPU Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review
NANPU 3/8" NPT Compressed Air Filter Regulator Combo Piggyback, 5 Micron Brass Element, Poly Bowl, Semi-Auto Drain, Metal Bracket, 0-150 Psi Gauge
26 Review
NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review