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Nitrogen balls

Nitrogen balls, Total:2 items.

In the international standard classification, Nitrogen balls involves: Education, Ceramics.

Professional Standard - Education, Nitrogen balls

• JY/T 0435-2011 Nitrogen dioxide ball

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Nitrogen balls

• GB/T 31703-2015 Ceramic ball bearings.Silicon nitride balls

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