Drainage channels cover mold drainage channels cover mold usually polypropylene pp (presented as a white solid at room temperature) molding process; of course, can also be made from raw material from ABS, ABS appearance was as opaque yellowish material, non-toxic, tasteless, and easily soluble in water, and the production of molds die than the average life expectancy for a long, strong hardness and turnover can reach more than 200 times. Today, one of the fundamental mission to revive China's mold industry is to strengthen the training of personnel, greatly improve the quality of talent the mold industry. In higher education from elite education to mass transition of today, our various universities cultivate a batch after batch of mold professional high-level personnel. But with the rapid development of the mold industry, can hardly meet the development needs, especially the needs of high-class mold manufacturing technology workers is growing. To meet this requirement development, the first task is to grasp the culture of this level of talent, this book is for this purpose provision could be used as intermediate mold labor training purposes. Cover mold making drainage channels need to prepare a mold model, a vibrating platform, a good mix concrete amount. The mixed material is poured into the mold, the vibration platform vibration for about 30 seconds, go to the next placed in a cool dark warehouses. Form removal or stripping molding were placed around a certain time about 24 hours to be solidified after molding. Finally, factory installed.