Beijing Dellon Visual Inspection Technology Co., Ltd ("Dellon"). 
As a professional provider of NDT Solutions, we offer a variety of portable video endoscope,pipe crawler, NDT Robot products for a wide range of Industrial visual inspection applications.
we can offer portable endoscope diameter: 4mm-10mm, working length: 1.5-10m, tip articulation: 2 Way or 4Way, TFT Monitor(3.5"/5.6"), still Image and Video storage available , rechargable battery for power supply.