Additionally, some businesses tend to omit or neglect the after-sales service. /After putting the money into the pocket, businesses shoulder no responsibility for the successive service. This narrow-minded view wipes off the potential business based on customers' impression. When Businesses have been immersed in counting the temporary money, they have failed to gain more in future. /For example, the diamond of shoes from ABC I had purchased dropped off in two days. I had to head for the relevant repairing center. However, the repaired shoes broke again and irritated me to ask for the refund. What's more, they even charged more for the refunded money. Later I sworn never to offer a glance at this shop and dissuaded friends from visiting it. The customer's feeling directly decides on products' life in the market. The theory of modern political economy in China holds that the profit under the socialist system is the form of the value of the surplus products created by the workers for the society. The value composition of the product is c+v+m,c+v is converted into production cost, and the m is part of the surplus product created by the laborer for the society, which translates into profit for the enterprise. The specific form of socialist profit is: to realize profit, that is, the balance of the sales revenue of the enterprise minus the expenses of various expenses; To pay the profits in accordance with the provisions to the national financial department; After tax profit, that is, the profit of the enterprise shall be returned to the enterprise in accordance with the state provisions. Fabricated and installed by Dortech Architectural Systems Ltd, Senior’s patented PURe® aluminium folding sliding doors feature as part of a stunning extension to Ms Stephen’s home. Offering slim sightlines that maximise views of the property’s pretty garden, the narrow yet robust aluminium frames of the PURe® doors have been powder-coated to provide an attractive brown finish that further complements and connects with the outdoor space. The right to promote and protect the free exchange of values between the two parties - the exchange of freedom is crucial to the participation of the future world. It is equivalent to freedom of speech in digital space. This is about equality and must be protected and seen as a human right.