1031
The best performing epoxy showed a 10 % increase in mechanical strength over the OEM epoxy at 76 % reduction in cost .
 epoxy, mechanical strength, epoxy, reduction
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:
 epoxy, mechanical strength, epoxy, reduction