Investment mold precision casting is developed on the basis of ancient wax mold casting.As an ancient civilization, China was one of the earliest countries to use this technology. As far back as hundreds of BC, the laboring people in ancient China created this lost wax casting technology, which was used to cast the ding and utensils with various fine patterns and characters, such as the tomb plate of Zeng Houyi in the Spring and Autumn Period.Tomb statue of plate base for multiple mutually intertwined dragons, they end to end, staggered up and down, form the middle hollow out layers of moire pattern, these designs using ordinary casting process are hard to make out, and with the method of lost wax casting process, can make use of the characteristics of paraffin wax no strength, easy to carve, carved with ordinary tools can and want to get the tomb of paraffin wax material arts and crafts of the plates, then additional gating system, coating, dewaxing, pouring, beautiful tomb statue of plate can be calculated out.