In air brake equipped commercial cars, the most important components of the brake systems are the rubber diaphragms with textile inserts.A lot of original equipment manufacturers in the world have chosen Doan Lastik branded diaphragms, which now provide the security of driving in brake systems of more than 1 million trucks and buses worldwide. Doan Lastik branded diaphragms have been tested in private laboratories in environments that simulate the tough and long road conditions faced all around the world. More than 2 million life cycle tests simulating real life conditions have been done to our products and all of our diaphragms have proven our devotion to quality by meeting or exceeding expected specifications. The diaphragms that we produce, provide our customers the right choice for their brake chamber units with our superior quality and our production capacity of 3,5 million/yea