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Concerning surface quality , it depends on the AM used technique , processing conditions and raw material characteristics , which affect the thickness of each printed layer .
 process parameter: surface quality; manufacturing process: AM; material: raw material; process parameter: layer
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:
 process parameter: surface quality; manufacturing process: AM; material: raw material; process parameter: layer