To complete the stylish extension, a number of the property’s existing hardwood windows have also been sympathetically replaced. Tasked with identifying a system that could match the visual appeal of the original wooden frames whilst offering improved quality, usability and security, the Dortech team took the innovative step of suggesting a change to aluminium. After reviewing alternative products on the market, Senior’s high quality PURe® aluminium windows were found to significantly outperform cheaper aluminium systems and offer the perfect solution in terms of both performance and aesthetics. The category of surplus value clearly reflects the antagonism between capital and labor, because it is the multiplication of variable capital and is possessed by the capitalist without compensation; And the category of profit, it seems, means that capital itself can create a new value. This reversal is the inevitable product of capitalist mode of production. First, because the constant capital + variable capital (c+v) consumed by the capitalist production is converted into cost price, thus concealing the essential difference between the invariant capital (c) and the variable capital (v); Second, because Labour costs into wages, show the labor remuneration, so surplus value into profit, has nothing to do with laborer labor, virtually the only product of the total capital; Finally, the surplus value into profit, on the premise of rate of surplus value into profit margins, namely by means of profit margins, only costs more than the forehead has translate into profits, further into the upfront costs in a certain cycle period more than the balance of its own price. In real life, industry companies is usually based on the established level of profitability, and then obtained the expected LiRunLiang on profit margins by prepaid cost, but it is not a subjective illusion, but objectively completely possible. The scientific argument and practice shows that this profit is actually the increment of variable cost. In short, profit is an intrinsic or an entity, while the rest is an external phenomenon or form. Passenger car: in its design and technical features, it is mainly used to carry passengers and their carry-on luggage and (or) temporary items, including the driver's seat, not more than 9 seats. It can also draw a trailer. Classified into ordinary passenger cars, live senior passenger cars, passenger cars, small passenger car, convertible, warehouse back passenger car, station wagon, multipurpose passenger vehicles, short head special passenger cars, cross-country passenger cars and passenger cars, etc. 11 class.