1646
There is no significant increase of crystallization and melting temperatures with the addition of IF-WS2 nanoparticles , which is beneficial in the FFF process .
 crystallization, melting temperatures, nanoparticles, FFF
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:
 crystallization, melting temperatures, nanoparticles, FFF