4516
By controlled and random process variation , unique codes that can be read and authenticated by an eddy current device were produced with the processes of laser powder bed fusion ( L-PBF ) and laser directed energy deposition ( L-DED ) .
 concept or principle: process; material: be; concept or principle: processes; manufacturing process: laser powder bed fusion; manufacturing process: L-PBF; manufacturing process: laser directed energy deposition
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: process, be, processes, laser powder bed fusion, L-PBF, laser directed energy deposition 
Answer:
 concept or principle: process; material: be; concept or principle: processes; manufacturing process: laser powder bed fusion; manufacturing process: L-PBF; manufacturing process: laser directed energy deposition