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нефтегазовая промышленность
знак соответствия стандарту
общая лексика
знак сертификации
A certification mark (or conformity mark) on a commercial product indicates the existence of an accepted product standard or regulation and a claim that the manufacturer has verified compliance with those standards or regulations. The specific specification, test methods, and frequency of testing are published by the standards organization. Certification listing does not necessarily guarantee fitness-for-use. Validation testing, proper usage, and field testing are often needed.
The USPTO considers that a certification mark is a kind of trademark.