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Work carried out by Scheithauer , showed the possibility of printing dense alumina pieces using 3D printing of high-filled suspensions with thermoplastic binder systems .
 material: alumina; manufacturing process: 3D printing; machine or equipment: thermoplastic binder systems
Please list all entity words in the text that fit the category.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} 
Answer:
 material: alumina; manufacturing process: 3D printing; machine or equipment: thermoplastic binder systems