The origin of the name Hafen trough:
Hafen's name comes from Hafen Company in Germany, which started producing embedded channel steel from 1929 and named it "Hafen trough". Hafen Company has set up a branch in China since 2008. Due to its high brand influence in the world, in recent years, many domestic channel steel manufacturers mainly engaged in "Hafen trough", which has been regarded as synonymous with all embedded channel steel in the industry.