An un-pigmented coating. Can be a protective coating over a coloured or metallic basecoat or metal (example - brass).

一种没有颜料的涂层，罩在有颜色或金属效果的底涂上面起保护作用。

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An un-pigmented coating. Can be a protective coating over a coloured or metallic basecoat or metal (example - brass).

一种没有颜料的涂层，罩在有颜色或金属效果的底涂上面起保护作用。

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