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3D printing of fiber reinforced polymer composites Fiber reinforcement can greatly improve the properties of 3D printed parts with polymer matrix .
 manufacturing process: 3D printing; material: fiber reinforced polymer composites; material: Fiber; concept or principle: properties; application: 3D printed parts; material: polymer
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: 3D printing; material: fiber reinforced polymer composites; material: Fiber; concept or principle: properties; application: 3D printed parts; material: polymer