- 1911Gabel Gauss founded COSO, a company specializing in the design and production of faucets.
- 1912The first humanized design faucet is being producing, innovating the entire German household faucet design.
- 1955COSO took the lead in researching and developing ceramic valve cores in the world, which had a important impact on the development of the faucet industry.
- 1978The COSO product line has completed covering the entire bathroom living space, and completed the prototype of the overall bathroom layout.
- 1993COSO headquarters move from Stuttgart to Köln
- 2019The second phase of the COSO Asia-Pacific Headquarters Industrial Park, covering a total area of 50,000 square meters, was officially opened.
- 2020Germany COSO won the 20th Golden Horse Award "China's Best Real Estate and Hotel Sanitary Ware Supplier"
- 2021Germany COSO continues to win the 21st Golden Horse Award for "Best Real Estate and Hotel Sanitary Ware Supplier in China"