About Us

KOCHS GmbH was founded in 1955 by Mr. Joseph Kochs, as a joiner’s workshop for wooden windows in Herzogenrath, Germany. In 1967, KOEMMERLING was one of the first companies to start extruding U- PVC window profiles. In that same year, KOCHS began its strategic partnership with KOEMMERLING and brought the world this environmentally friendly material.


KOCHS products can be found in Germany, Netherlands, France, Belgium, Luxembourg, Austria, and other European countries.

In 2004, KOCHS entered into the Chinese Market with our 50 years of experience and set up a factory and assembly teams in Nantong, Jiangsu.

Today, KOCHS Germany is one of the largest window manufacturers in Europe and the market leader for U-PVC passive house windows in Germany. In China, KOCHS has become a strong growing company with representatives in Suzhou, Hangzhou, Nanjing, Changzhou, Nantong, and Shanghai.