... 4 Easy sterillization 5 Aesthetic design Waterless urinal with ISO 9001:2008 certificate Eco & Environment ... Are Available ( BeiJing Worker's Stadium ) Authorized with five state patents respectively at 2002, 03, ... residue of urine, no scaling, having good performance of sterilization and comfortable in use,low consumption ... half a year.. Waterless Urinal ( With Patented Mechanical Drainage Trap )