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In order to help businesses identify candidate parts for Powder Bed Fusion ( PBF ) AM , this paper presents a DfAM worksheet to help engineers , drafters , and designers select good part candidates with little prior knowledge of the specific technology .
 manufacturing process: Powder Bed Fusion; manufacturing process: PBF; manufacturing process: AM; concept or principle: technology
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: Powder Bed Fusion, PBF, AM, technology 
Answer:
 manufacturing process: Powder Bed Fusion; manufacturing process: PBF; manufacturing process: AM; concept or principle: technology