1504
Prometal is a 3D printing process to build rapid tools and dies .
 manufacturing process: Prometal; manufacturing process: 3D printing; process parameter: build; machine or equipment: tools; machine or equipment: dies
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 manufacturing process: Prometal; manufacturing process: 3D printing; process parameter: build; machine or equipment: tools; machine or equipment: dies