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Aviation jet engine lubricating oils

航空喷气机润滑油

GB 439-1990 is a current mandatory Chinese national standard for Aviation jet engine lubricating oils. It appears in the Machinery compliance cluster with a energy efficiency focus and has an implementation date of Nov 1, 1991.

Applicability depends on product scope, certification route, competent authority notices and transition rules. Request a translation or verify source before using this record in a compliance decision.