公司组成:  

                                                  电动机系列生产

                           杭州双余机电有限公司     

                                                  特殊电机系列开发生产

                                                  MDL供水泵与供水系统生产

                           杭州美安电机有限公司   

                                                  商用建筑用泵生产

双余实业

                                                  工程用泵生产      

                           杭州艾夫特泵业有限公司 

                                                  工程业务接待与开发

                                                  中国泵网百事通运营

                           杭州火速科技有限公司    

                                                  新营销模式交流与传播