Working Principle: high-pressure discharge stimulate high concentration CO2 to generate laser. Laser Wave Length: 10.6um.Laser Mode:low order mode. Water-Cooling: purified water, appropriate temperature 10-35 Celsius degree. Working Environment:temperature 5-35 Celsius degree, humidity 10-60%, clean environment, no serious pollution. Working Current:16~22mA is appropriate (excessive current will affect laser power and laser tube lifetime. Safety Demand: CO2 laser tube outputs invisible light, positive with high pressure, if necessary, eyewear is essential. Laser State: Laser power will be attenuated when the laser tube is used at a certain time; If the laser is pink, it is in normal condition; if the laser is white, it means the laser power is attenuate. ( Laser tube is consumable, please change a new one when it can’t meet demand due to attenuation. ) Laser State: 1.There are two points to support the laser tube at two sides, when you install the laser tube, the two points should be in 1/4 of the laser tube; 2. On the basis of cooling water above-in and below-out, if you rotate the laser tube slightly, it will affect laser spot and laser power.