Thesis topics are the marks of product quality. The work is divided into seven chapters, together with an introduction and a conclusion. The paper talks about the product quality labels, which are under the control of the authorized institutions are placed on products of higher rank, and make it easier for consumers with a choice. Consumers are today all the more selective, and the market is saturated with products all kinds of quality. Croatia Chamber of Commerce still 18 years ago introduced a visually identifying the products and services the signs "Croatia quality" and "Croatian creation". Product quality labels emphasize quality, uniqueness of product quality, its origin, characteristics and guarantee to the consumer that this is a product of proven excellent quality. Special emphasis is placed on product quality tags to prevent the unauthorized use of a registered name, a violation of the reputation of the products, the protection of the natural conditions in the region, improving the economy and life in underdeveloped rural areas. Indigenous products fall into a higher category because they contain added value and contribute to the increase of the income of producers.