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High Rotation Efficiency High Precision 45#Steel/ 40cr/ 20crni2moa Straight Bevel Gear, Find Details and Price about Bevel Gear High Precision Bevel Gear from High Rotation Efficiency High Precision 45#Steel/ 40cr/ 20crni2moa Straight Bevel Gear - Guizhou Aerospace Qunjian Precision Machinery Co., Ltd.