1453
Two functional prototypes were developed with the selected materials from the explained methodology a PLA and a flame retardant ABS , and post processed to full fill the actual product´s specifications .
 functional prototypes, materials, methodology, PLA, flame retardant, ABS, processed, specifications
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 functional prototypes, materials, methodology, PLA, flame retardant, ABS, processed, specifications