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. On the basis of introducing marginal concepts and mathematical argumentation, neoclassical has established a formal "perfect" mathematical model for the neoclassical "laissez-faire order" : general equilibrium. The price is the most important independent variable in this model, which can also be called price mechanism. The process of achieving general equilibrium is also a process of social resources guiding the flow of prices, so the price mechanism regulates the allocation of social resources. 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.