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The recent development of laser 3D printing techniques makes it possible to fully explore intricate designs and maximize the thermal performance of Cu-based thermal management components but present significant challenges due to its high optical reflectivity .
 enabling technology: laser; manufacturing process: 3D printing; engineering feature: designs; concept or principle: performance; machine or equipment: components; process characterization: optical
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, 3D printing, designs, performance, components, optical 
Answer:
 enabling technology: laser; manufacturing process: 3D printing; engineering feature: designs; concept or principle: performance; machine or equipment: components; process characterization: optical