No sound-1 No sound-2

hofmamn profile is 100% soundproof

It is always spring.-1 It is always spring.-2

with its Heat proof feature, temperature is balanced at any season

A house without dust.-1 A house without dust.-2

Fully sealed against dust

Multistage Quality Control

Multistage
Quality Control

25-year color change and deformation guarantee

25-year color change
and deformation guarantee

Sound, heat and dust resistant

Sound, heat and dust
resistant

color 1 color 2 color 3 color 4 color 5
color a color x color y color z color z

hofmann Laboratory


At each stage, Hofmann products are tested by the Quality Control Unit in the Hofmann laboratory.

  • Testing color, color stability and gloss of profiles in the laboratory
  • Testing the profile strength by falling (drop) weight impact tester
  • Thermal reversibility of profiles to resist against heat and cold
  • Tensile and impact strength tests
  • Testing appearance changes of profiles at 150 ̊C
  • Profile weldments and angles