Many such codes exist – NAICS, UN/SPC, SIC Codes, etc. – and are widely used to classify businesses, industries, and product categories.
现在已经存在许多这样的类别编码，比如naics，un/spc，sic编码等等，这些编码被广泛用于商业。
Many such codes exist – NAICS, UN/SPC, SIC Codes, etc. – and are widely used to classify businesses, industries, and product categories.
现在已经存在许多这样的类别编码，比如naics，un/spc，sic编码等等，这些编码被广泛用于商业。
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