EPC (also known as solid-type casting) is casting size and shape similar to the wax or foam bonded to form the model cluster model, fire-resistant paint brush and dried, buried in dry sand in the shape of the vibration, the negative pressure under the casting, the model gasification, liquid metal occupying the location model, solidified after cooling to form a new casting method of casting. 
 Production principle: first, according to process requirements of the Act made foam models, linked to a special high temperature paint coated, dried, placed in a special sand box, then fill with dry sand process requirements, the use of three-dimensional vibration compaction, the vacuum state casting molten metal, then the model gasification disappear, liquid metal replacement model, replicate the same model with foam casting.