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Close to DLP principle , the Continuous Liquid Interface Production ( CLIP ) production is a new type of AM that uses photopolymerisation working in continuous , thanks to a projector and the ability to control oxygen levels throughout an oxygen-permeable membrane .
 manufacturing process: DLP; manufacturing process: Continuous Liquid Interface Production; manufacturing process: CLIP; manufacturing process: production; manufacturing process: AM; concept or principle: photopolymerisation; machine or equipment: projector; material: oxygen; material: oxygen-permeable membrane
Please list all entity words in the text that fit the category.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} 
Answer:
 manufacturing process: DLP; manufacturing process: Continuous Liquid Interface Production; manufacturing process: CLIP; manufacturing process: production; manufacturing process: AM; concept or principle: photopolymerisation; machine or equipment: projector; material: oxygen; material: oxygen-permeable membrane