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0 means no protection
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0 means no protection
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1 to prevent the hazards of 50mm above the solid (accidental hand contact)
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1 can prevent the harm of vertical falling into the water
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2 to prevent the hazards of 12mm above the solid (finger size objects)
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2 can prevent the vertical direction into 15 degrees below the direct water spray hazards
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3 to prevent the hazards of 2.5mm above the solid (fine wire, etc.)
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3 can prevent the vertical direction into 60 degrees below the direct water spray hazards
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4 to prevent the hazards of 1mm above the solid (fine wire, etc.)
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4 can prevent the harm from the direct water spray in all directions
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5 to prevent the harm of dust
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5 to prevent the harm of low pressure water injection in all directions
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6 completely prevent dust hazards
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6 to prevent the harm of high pressure water injection in all directions
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7 can prevent the 15cm~1m between the immersion of the harm
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8 to prevent long-term immersion under pressure
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