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              GDHL-100A Micro-OhmmeterGDHL-100A Micro-Ohmmeter is widely used to measure loop resistance and contact resistance for weld joints, cables, and various HV switches within power industry. It uses intelligent power test system “Smart-Quick”, which is granted software copyright, and advanced detection technology. 
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              GDHL-200A (GDHL-100A) Micro-OhmmeterGDHL-200A (GDHL-100A) Micro-Ohmmeter is widely used to measure loop resistance and contact resistance for weld joints, cables, and various HV switches within power industry. 
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              GDHL-200B / GDHL-500B / GDHL-600B Contact Resistance Tester (Microhm meter)● High, middle and low voltage circuit breakers ● High, middle and low voltage disconnecting switches ● High-current bus bar joints ● Cable & Welding joints It is suitable for high current, micro ohm measurement. 
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              GDHL-100HS 100A Handheld Contact Resistance TesterThe product is mainly used for the contact resistance of switch contacts and other micro-ohm resistance measurement, and the test speed is fast and the accuracy is high. 
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              GDHL-100B Contact Resistance Tester (Microhm Meter)The performance of the conductive circuit of the circuit breaker is important to ensure the safe operation of the switch. 
