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Water-atomized and gaB-atomized 17-4 PH stainless steel powder were used as feedstock in selective laser melting process .
 material: 17-4 PH stainless steel; material: as; manufacturing process: selective laser melting process
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: 17-4 PH stainless steel, as, selective laser melting process 
Answer:
 material: 17-4 PH stainless steel; material: as; manufacturing process: selective laser melting process