The operator's duties also include selecting specific raw materials for production and ensuring a good combination of these materials so that they complement each other. (jobdescriptionandresumeexamples.com)
Each company uses different combinations of materials, so there may be a special step you need to take or a type of detergent to avoid. (thespruce.com)
It has a pizza oven, stove and it features an interesting combination of materials and textures. (homedit.com)