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After-sales 5.2.8 Shallow Water Exploration Failure
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After-sales 5.3.1 Missing Cleaning Process
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After-sales 5.4.1 Unknown Cleaning Interruption
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After-sales 5.5.1 Did not return to the waterline.
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After-sales 5.5.2 Did not return to the starting point.
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After-sales 5.5.3 Did not return to the water surface.
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After-sales 6.1.1 Shell Cracking, Peeling, and Scratching
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After-sales 6.2.1 Roller Brush & Track Abnormalities
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After-sales 6.2.2 Wheel Assembly Abnormalities
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After-sales 6.2.3 Propulsion System Abnormalities