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YB 43-1964 via email in ABOLISHED please email coc@codeofchina.com for quotation
GB 226-1991 Etch test for macrostructure and defect of steels 45 (USD) via email in 1-3 business day ABOLISHED
TB/T 2450-1993 255 (USD) via email in 1-3 business day ABOLISHED
YB/T 5128-1993 Steel-Determination of continuous cooling transformation diagram-Dilatometric method 165 (USD) via email in 1-3 business day ABOLISHED
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