Is Siemens pre-filter genuine?

It's real. Siemens AG, founded in 1847, is a leading enterprise in the field of electronic and electrical engineering in the world. According to the official knowledge of Siemens, Siemens pre-filter is genuine, and Siemens filter has its own patent, and its good filtering effect is loved by countless consumers. Siemens entered China from 1872. In the past 140 years, Siemens has persistently provided comprehensive support for the development of China with innovative technologies, excellent solutions and products.