grants for not for profit Before that, what is the nature of the enterprise itself is an issue that has been ignored by traditional microeconomic theory. In the traditional microeconomic theory, is the manufacturer's production process as a "black box", namely enterprise is abstracted into a from input to output a "black box" of the pursuit of profit maximization. The essence of economic value is human labor in the process of human economic products and relations. The value of the use value of creating products and the labor value of creating production relationship. The value concept in "das kapital" refers to exchange value, which is the essence of capital relations. Can't be replaced by local value Microsoft's Surface Pro, Surface Laptop, Surface Book and Surface Studio are the main products of Microsoft's Surface series, but there is a clear difference in the share of the devices. The Surface Pro products account for the highest share (79.9%), the Surface Book (7.5%), Surface Laptop (2.0%), and Surface Studio (0.2%). The fund's fourth consultation underlines the enormous uncertainty facing Britain in the ambitious task of negotiating an exit from the eu. The largest increase in the number of global blockchain participants has been so far At the same time, the company also announced that it will acquire 450,000 tons/year calcium chloride unit and 49,000 tons/year calcium chloride plant of the giant chemical group of China, with 6402, 53.1 million yuan. Xinlian chemical and plasticizing plant realized the revenue of 3251, 86.30 million yuan respectively in January and November of 2017, achieving a net profit of 97 yuan, -3.27 million yuan. The acquisition can improve the self-balancing ability of hydrogen chloride and hydrochloric acid in the company, and it is expected to guarantee the operation stability of the industrial chain after the completion of the acquisition.