GB/T 43556.2-2023 Fiber optic cable line maintenance technology part 2: underground joint box water immersion monitoring using optical monitoring system (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 43556.2-2023
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2023GB/T 43556.2-2023 Fiber optic cable line maintenance technology part 2: underground joint box water immersion monitoring using optical monitoring system