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These results show that laser polishing can improve the corrosion resistance of additive manufactured stainless steel while also decreasing surface roughness and increasing surface microhardness .
 enabling technology: laser; concept or principle: corrosion resistance; manufacturing process: additive manufactured; material: steel; machanical property: surface roughness; concept or principle: surface; concept or principle: microhardness
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: laser, corrosion resistance, additive manufactured, steel, surface roughness, surface, microhardness 
Answer:
 enabling technology: laser; concept or principle: corrosion resistance; manufacturing process: additive manufactured; material: steel; machanical property: surface roughness; concept or principle: surface; concept or principle: microhardness