CHGE71TS3 10 inch 0.5+0.2 μ m is a Merck Millipore brand filter cartridge produced in the United States. Its main specification is a hydrophobic 226 socket 0.2 μ m PTFE filter cartridge. The main function is to have good interception efficiency for solid particles larger than 0.2 microns, especially for bacteria. *The disadvantage may lie in the high price, which is about 5 times the price of domestic filters with the same specifications and parameters. So for some customers who do not have particularly high product quality requirements, it is recommended to use domestically produced PTFE filter cartridges, because the technical quality of domestically produced membranes is already very complete and can meet the requirements of factory workshops. My humble opinion, I hope to discuss it together, thank you!