Trade mark is a company name, symbol, image or trademark combination of them, duly registered, that is, legally protected product. There are signs to distinguish the goods or services of one manufacturer from the goods and services from another manufacturer.
Sales unit is the integrity of a certain size and look of the price (a tube of toothpaste).
Range is a group of related products or common use and operation of, or sold through the same outlets, either within the same price range.
Packaging is a wrapper for the goods. It is an important advertising medium, for easy transport and storage of goods, protects from damage and ensures optimal weight and volume units for sale.
Brand name is the letters and the words used to identify the product.