... uniform transmission; Constant current drive, stable performance; industrial X ray film viewer X8-69CThe Eight Characteristics:1, Automatic ... 6%-100%, easy to use.6, Material quality, corrosion resistance, good insulation.The shell is made ... , similar to noLow, similar to noHighService lifeLongGeneralinferiorShell materialHigh quality plastic, insulation, corrosion resistance.Metal, not insulated, ...