Beijing SDZ Laser S&T Co., Lter is located in the high and new teehnology ,Tongzhon District, Beijing ,China. Under the strong technology support of ChineseAcademy of Science our company mainly resarches and produces high performance CO2 laser tubes. relative high voltage power suppies. optial elements and laser meters. The CO2 laser tubes adopt a special crafet and import gases to decrease the dissocication speed of the working gases,hence highly inereased the working life, especially, for higt power laser tubes, such as 100w` 200w and even higher power laser tubes.……more>>