spare parts is an item of inventory used to replace failed parts.
polymer is a molecule, made from joining together many small molecules calledmonomers. The word "polymer"
chemical substance is a form of matter that has constant chemical composition and characteristic properties. It
Paper is a thin material produced by pressing together moist fibres of cellulose pulp derived from wood, rags or
The machine industry or machinery industry is a subsector of the industry, that produces and maintains machines