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Currently , most WAAM fabricated parts need to be post-process treated with a selective combination of technologies to reduce the defects and improve the product quality to the greatest extent possible .
 manufacturing process: WAAM; concept or principle: fabricated; material: be; concept or principle: technologies; concept or principle: defects; concept or principle: product quality
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: WAAM; concept or principle: fabricated; material: be; concept or principle: technologies; concept or principle: defects; concept or principle: product quality