They were misled. One material was demonstrated on the samples and the stand, and in fact its similarity and defective were brought. We are talking about the profile of a vibrating screen for mounting a frame for sheet materials.
At the stand in the company's office, we were shown a profile with a rough surface of high quality, which is why we were not confused by the high price of this material. And they brought the usual khauf profile with mastic applied on one side. Apparently, in this way they tried to give the properties of the demo sample to the usual profile, BUT even here something went wrong. A layer of mastic was applied to the smooth and oily surface of the usual profile after rolling. The mastic simply sticks together when the profiles are assembled in a bundle for transportation and lags behind the smooth surface. In the photo below, everything is visible and clear.
Let's see how the company handles the claims 🤷🏼