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We found that 0.3 wt % loading of MWCNT in the resin matrix can provide the maximum electrical conductivity of 0.027S/m under the resin viscosity limit that allows high printing quality .
 material: resin; machanical property: electrical conductivity; material: resin; concept or principle: limit; concept or principle: quality
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: resin, electrical conductivity, resin, limit, quality 
Answer:
 material: resin; machanical property: electrical conductivity; material: resin; concept or principle: limit; concept or principle: quality