2084
Results showed an improvement of the cycle time of 53 % and a reduction of product warpage by 46 % compared to conventional cooling channels .
 concept or principle: reduction; process characterization: product warpage; machine or equipment: conventional cooling channels
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:
 concept or principle: reduction; process characterization: product warpage; machine or equipment: conventional cooling channels