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                                     Petroleum machinery gear  
                                  Material: 42CrMo
                                  Size: φ782×175mm
                                  Model: DF8B
                                  Copyright @ Yiyang KangYi machinery development Co., LTD Add:MeiLin Rd,Yingyang High-teach Zone,Hunan Pro,China
                                  09020812 date) for xiang ICP use 1024 * 768 above Suggestions the screen resolution
                                  Technical support: dean technology