Our products involve electrical measurement with current from pA to 10kA, voltage from nV to 100kV, resistance from nΩ to tΩ, frequency from DC to 10MHz and accuracy from 10-4 to 10-6. It all have been converted into 22 series electrical testing equipment: measurement standards, AC & DC instruments, new energy detection, etc. For magnetic measurement, Tunkia has researched 11 series testing equipment for material and products. We provide comprehensive testing solutions about magnetic intensity, flux, permeability, histeresis loop, etc.