5336
The technique uses metallic powder as a starting material and a laser for melting and building-up parts layer by layer .
 metallic powder, as, material, laser, melting, layer by layer
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 metallic powder, as, material, laser, melting, layer by layer