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However , if one considers the typical end applications along with the high costs involved in metal additive manufactured components , a “ zero defect ” target is close to mandatory for this technology .
 material: metal; manufacturing process: additive manufactured; concept or principle: defect; concept or principle: technology
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:
 material: metal; manufacturing process: additive manufactured; concept or principle: defect; concept or principle: technology