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It is required both for the realization of AM-based enhanced product performance as well as when printing more standard product designs ; these designs also have to be optimized for specific AM process opportunities and constraints so they are produced reliably , on time and cost efficiently .
 concept or principle: performance; material: as; material: as; concept or principle: standard; engineering feature: product designs; engineering feature: designs; material: be; manufacturing process: AM process
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:
 concept or principle: performance; material: as; material: as; concept or principle: standard; engineering feature: product designs; engineering feature: designs; material: be; manufacturing process: AM process