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in buil and uh what we have here is a touch screen uh this is the uh pen for operation touch screen and we have the sampling stick we have this sampling paper also I will use this a explosive samples which we add some liquid inside to make it to be very light this is TNT and this is a n and here I got from fireworks very light explosive black powder so now we are firstly we are testing show you a clean sampling paper a clean sampling paper insert inside this device okay within one second it tell you nothing font safe okay take this sampling out I put that in this the sampling stick okay here I already put some black powder I use this scratch the P scratch my bik you can also scratch the passengeramp;#39;s coat uh scratch the seats of the car scratch the driver anyway you think it could be have some tracks of explosive and Iamp;#39;m taking that paper out to insert in the device okay within 2 seconds it show you detect explosive and show you the material it is black powder now Iamp;#
