WELCOME TO ONE OF THE WORLD LEADING DUCT FAN PRODUCER   AB C.A. Ostberg in Sweden   AB C.A. Ostberg is one of the world leading duct fan producer and have since the start 1981 focused on in-line duct fans which we continuously develop. Today we have a wide range of in-line duct fans, wall fans, roof fans, radial fans and energy recovery units. 奥斯博格通风设备有限公司作为世界管道风机的领导者，自从1981年开始我们不断发展并成为管道风机领域的代表，今天我们不断扩宽我们的管道风机产品包括墙式风机，屋顶风机，径流风机还有热回收风机。..