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The additive manufacturing was successfully demonstrated through two samples with the 4.34 % ( sample-1 ) and 6.58 % ( sample-2 ) aluminum content , which is not much different with the content of the design .
 manufacturing process: additive manufacturing; concept or principle: samples; material: aluminum; engineering feature: design
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: additive manufacturing; concept or principle: samples; material: aluminum; engineering feature: design