The water-soluble color lead and crayon both definitely are dissimilar, strict speaks the water-soluble color lead is crayon's one kind.
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The color lead is pencil's one kind, the primary data is the graphite. The manufacture process may divide into technological processes and so on pencil board, lead, lead penstock, end product decoration.
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The color lead is pencil's one kind, the primary data is the graphite. The manufacture process may divide into technological processes and so on pencil board, lead, lead penstock, end product decoration.
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