Irin giga carbon 45 # ni a lo fun awọn gige lilu lilọ fun igi rirọ, igi lile, ati irin rirọ, nigba ti GCr15 ti n gbe irin ti a lo fun awọn igi rirọ si irin gbogbogbo.4241# irin iyara to gaju dara fun awọn irin rirọ, irin ati irin lasan, 4341 # irin iyara to gaju dara fun awọn irin rirọ, irin, i ...
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