... Brief description:* Rivena Q7 is a kind of Industrial radial films; make NDT to the object by ... density steels /products through high-energy Gamma ray.Application Objects:*Metal, Castings, welding*Aircraft Industries, Electron ... films recordManufacturer guarantees the record time for permanent film as 50 years, but should observe follow ... fixer, temperature: 20°C, time: 5 minutes. industrial NDT film