Ozone vacuum-ultraviolet (VUV) ozone generators, employ a light source that generates a narrow-band ultraviolet light, a subset of that produced by the Sun. The Sun's UV sustains the ozone layer in the stratosphere of Earth. UV ozone generators use ambient air for ozone production, no air prep systems are used (air dryer or oxygen concentrator), therefore these generators tend to be less expensive. However UV ozone generators usually produce ozone with a concentration of about 0.5% or lower which limits the potential ozone production rate. Another disadvantage of this method is that it requires the ambient air (oxygen) to be exposed
House of Traps House of Traps House of Traps is a 1982 Shaw Brothers film directed by Chang Cheh, starring the Venom Mob. The story is based on the 19th-century novel "The Seven Heroes and Five Gallants". When a corrupt prince arranges for the theft of a highly valuable jade antique the emperor dispatches his best men to retrieve it. The only problem is that the prince has hidden the antique in the infamous 'house of traps' from which no man has ever made it out alive. Royal investigator Sun Chien and his men mount a daring raid on the prince's birthday which