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Selective electroplating on these parts is one approach to incorporate materials with high conductivity onto 3D-printed structures .
 manufacturing process: electroplating; concept or principle: materials; machanical property: conductivity; manufacturing process: 3D-printed
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: electroplating, materials, conductivity, 3D-printed 
Answer:
 manufacturing process: electroplating; concept or principle: materials; machanical property: conductivity; manufacturing process: 3D-printed