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Indicators on 文邦 You Should Know

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凹版印刷方式印版的图文部分低于空白部分，印刷原理类似于阴文印章。凹版印刷分为雕刻凹版、电镀凹版及照相凹版等，其印制品墨层厚实、颜色鲜艳、饱和度高，? https://georgiaeprx806982.blogthisbiz.com/36272338/little-known-facts-about-出海

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