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Service-Measurement and Testing of Safety Tools and Instruments_Nanjing Zhengrui

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State Grid Category 2-Framework and Shortlisted_Nanjing Zhengrui

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Municipal pole relocation partial performance_Nanjing Zhengrui

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State Grid Class 1-State Grid Power Transmission and Transformation_Nanjing Zhengrui

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Services-equipment maintenance and maintenance services_Nanjing Zhengrui

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Service category-substation installation and commissioning_Nanjing Zhengrui

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