... X-ray Mahcine ( XYD-1520/4 model) 1. SummarizationMobile industrial X-ray flaw detectors is main NDT equipment,Its main function is happen constant potential x-ray ... screen back light display board, Chinese interface, man-machine dialogue, dynamic display pattern, beautiful design, membrane ... preset, focus selection, inter-lock protect, man-machine dialogue and Chinese operation system are make sure no ...