Refrigerant season price performance is good, overall profit is good The focus of 2017 also includes making blockchain workplaces more attractive. His European central bank held interest rates unchanged and signaled that it would maintain its aggressive currency, despite data showing strong economic performance in the region. In the face of market failure, coase has given the opposite answer: external-utility problems can be solved by explicitly using the market, without government intervention. And zhang wuchang is more absolute, he said that there is no so-called external utility, there is only unclear property rights. Anyway, coase brought revolutionary innovation to market concepts. He made it clear that the key to the market was not the "price mechanism" of impersonal machinery, but the power of participants in economic activity.