What can be sold on the production of what is the concept of what marketing

What can be sold, the enterprise will produce what is the "production and marketing" concept:

Marketing concept is to guide the enterprise to carry out business sales activities, attitudes, views and methods of thought. On the part of the world's developed countries in terms of enterprise, the change of its marketing concept has experienced production-oriented, sales-oriented and market-oriented three periods, has appeared the concept of production, product concept, sales concept, marketing concept and social marketing concept.

The production-oriented period began at the end of the 19th century, extending for about 50 years. This period of product demand exceeds supply, the market belongs to the seller's market, the enterprise by increasing production, reduce costs to obtain huge profits. This period has formed the "production concept" and "product concept". The "production concept" that enterprises should be production-centered, what to produce what to sell, how much to produce how much to sell, and only seek high yield, no need to consider the product color, style, variety and other quality factors. When the gradual development of production, product abundance, consumers in the same price under the choice of good quality goods, forcing enterprises to change the marketing concept, the emergence of the "product concept". The "product concept" that enterprises should be product-centered, in increasing production, reduce costs at the same time, but also must continue to improve product quality, and business management should focus on the latter.