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              GDPQ-5000 Power Quality AnalyzerGDPQ-5000 Power Quality Analyzer is a comprehensive test instrument carefully developed by our company and specially designed for field test of three phases, multi-functional and intelligent, concise man-machine operation. 
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              GDPQ-300E Power Quality AnalyzerGDPQ-300E Power Quality Analyzer is a portable device of testing and analyzing power system operation quality. It monitors and collects data in long running time, also provides harmonic analysis and power quality analysis. 
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              GDPQ-300A Portable Power Quality AnalyzerGDPQ-300A Power Quality Analyzer is a portable device of testing and analyzing power system operation quality. It monitors and collects data in long running time, also provides harmonic analysis and power quality analysis. 
