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However , a lack of materials suitable for inkjet printing poses one of the key challenges that impedes industry from fully adopting this technology .
 concept or principle: materials; manufacturing process: inkjet printing; application: industry; 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: materials, inkjet printing, industry, technology 
Answer:
 concept or principle: materials; manufacturing process: inkjet printing; application: industry; concept or principle: technology