In the descriptions of our products we have purposely omitted information on our suppliers, because we hold entire responsibility for the performed, supplied and installed products. Our engineers decide about choice of profiles, hardware and glazing, to meet our clients' requirements. We frequently bring our co-operatives' attention to the necessity of changes in components offered to us, to ensure the best quality of our products...
 
The high quality of our products has to be what differs us from the competition.