It not merely exists in the file or file of the catalogue, publicity materials, customer service record, but exists in the procedure, course, practice and convention of customer relation management.

它不仅存在于产品目录、宣传材料、客户服务记录的文件或档案中，还存在于客户关系管理的程序、过程、实践和惯例之中。

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Some libraries carry a separate catalogue for each type of such audiovisual materials.

有些图书馆对这类视听资料中的每一种都备有单独的目录。

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Unless with prior written request, all, photos and materials supplied and advertising film produced will be destroyed after the production of Exhibition Catalogue.

除展商书面要求外，展商所提交的一切材料和制成的广告底片将于场刊印制后毁掉。

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