ice cream truck profit The new Surface Pro(2017) accounts for 9.2%, roughly the total of the Surface Book(7.5%) and the Surface Laptop (2.0%). Thus, surplus value is the intrinsic essence of profit, and profit is the phenomenon form of surplus value. Surplus value into profit, the profit and then into average profit, etc., hierarchy, the more the more escalated from abstract to concrete, it is close to the reality of capitalist society and the consciousness of the capital relationship between the parties; As a result, capital relations are becoming more and more mysterious as they leave their own source or base and get further and further away. Bourgeois economists for capitalism exploitation system, trying to deny the existence of the surplus value, no conflict between capital and employment, the product of the profit as capital itself, as the result of both production and circulation process. The so-called trinity formula of profit (interest), labor wage and land rent is the most explicit and typical defense argument of bourgeois vulgar economy. Marx's theory of profit is the transformation form of surplus value, profoundly reveals the essence and source of the profit, and profit further transformation of various concrete form again and they reflect the complexity of the capitalist production relations and class performance, thus for the proletariat and working people struggle against the bourgeoisie, and fight for the liberation of revolution provides the theory of sharp weapons. (1) spiritual gain -- spiritual satisfaction; In terms of the purchase of intermediate products in the market, because a lot of manufacturers are generally buy goods from a handful of suppliers, it is beneficial to this a few suppliers to achieve economies of scale and reduce the cost of production. Moreover, market competition pressure between intermediate product suppliers forces suppliers to reduce production costs. In addition, when a few suppliers in the face of many intermediate products of demanders, these a few suppliers can be avoided due to the limited market demand caused by unstable, the loss that may lead to maintain a stable overall sales. It is easy to draw the conclusion that on the condition that businesses make a profit by exploiting on human resources, falsifying on products and neglecting the after-sales service, they will not success in a long run. Only the businesses thinking in the overall respects can survive and thrive all the time.