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Specification: Assay of Ta:≥99.95%，99.99% Grain size:＜70um Surface roughness:＜Ra1....
Brief introduction of niobium pipe: http://www.zzstc.com/Niobium/niobium-pipe.html ...
Brief introduction of niobium rod: http://www.zzstc.com/Niobium/niobium-rod.html Wh...