Instrument accessories Tonghui Electronics DC Resistance Scanner Expansion Card TH2518-ms (applicable to TH2518a) Call
Resistance testing instruments Changzhou Tonghui TH9320-S4A AC/DC withstand voltage insulation tester Call
Resistance testing instruments TH9403 Programmable Grounding Resistance Tester from Tonghui Electronics Call
DC Bias Current Source TH6940-60 Wide Range Programmable DC Power Supply from Tonghui Instrument Call