“We are a trade specialist so all retail enquiries and enquiries from smaller independent installers are handled by our customers, which means they are sharing directly in the success of our campaign.” The market has its origins in ancient times when people used the term of place to trade in fixed time or place. In the present, the market has two meanings, one is the trading place, such as traditional market, stock market, futures market, etc., another meaning is the general term of trading activity. The word "market" refers not only to a trading venue but also to all transactions. So when it comes to market hours, it's not just about the size of the site, it's about whether the consumer activity is active. In a broad sense, all property rights transfer and exchange relationships can be market. The Barnsley based REHAU fabricator has seen a surge in enquiries from installers and consumers in response to its ongoing advertising, PR and web campaign and these are being passed to its stockists and distributors nationwide. 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. Generally speaking, the interest rate varies according to the term of measurement, indicating that the method has annual interest rate, monthly interest rate and daily interest rate.