With more than 70,000 product categories, 3M has a strong branch of 3M's water purification business, and with its high brand awareness and smooth sales channels, 3M has successfully occupied a place in China's water purification market.

There are not many products for 3M pre-filters, among which it is more noteworthy is BFS3-40GL, which is imported from Germany, with excellent material and workmanship, but its product performance is not advantageous compared with domestic products, although it also uses 40 micron precision stainless steel filter element, also with backwash function, but there is no water pressure gauge and monthly meter, it is a very ordinary pre-water filter, and the price of about 1500 is also slightly higher.

Other models such as 3CP-F020-5 and BFS1-100 have a filtration accuracy of only 100 microns, which is significantly backward compared with mainstream product parameters, and is not recommended to buy.

In terms of installation, users need to contact the 3M after-sales service hotline to provide the installation address and personal information to make an appointment for installation after the arrival of the goods, and the installer will take the initiative to contact and install the installation within 3-5 days.