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1L,OSP,Stepped groove
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2L,0.4mmthk+Sinking gold, car navigation
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2l,White oil, sunk tin, 6mm countersunk hole, LED
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2l,Electric metal binding, medical board
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4L,Sinking gold, blind hole+buried hole
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4L,Red oil board, monitoring equipment
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4L,Blue oil, crimping hole, industrial robot
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4L,Resin plug hole, computer product
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10L,2.0mmthk,Sunken gold plate