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By certification 
Square brass tube:
Standard : ASTM C2620, C2700,C2720,C2800
Material: CUZN32, CUZN35, CUZN37,
Specification: O.D from 8mm to 60mm ;
Payment term: TT, LC
Price term: FOB, CNF, CIF
Package: wooden case
Application: conduction, sanitary, decoration ,industry and so on.
