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In 2007, the quenching oil compound passed the inspection and evaluation of the PetroChina Dalian Quality Inspection Center!

Category:History

Add time:2021-08-05

Summary:In December 2007, the quenching oil compound passed the inspection and evaluation of the PetroChina Dalian Quality Inspection Center, becoming the first additive product to pass the certification of a third-party testing institution.