Product quality means to GLG long-lasting reliability, user-friendly installation, prompt delivery terms and assistance. All these aspects represent a real advantage in economic terms for both end customers and resellers or servicemen, since their running costs will be drastically cut down as well as their efforts in installing and providing technical assistance during warranty period. The current range of industrial and flexible doors – manual and automatic – and a line of high speed doors meet all the different needs as to handling goods, means and people within industrial and business realities; moreover, all these products identify themselves for their high quality standard.