In finance, investing means buying securities or other financial or paper assets. Valuation is a way to estimate the price of a potential investment. The types of investments include real estate, securities investment, gold, foreign currency, insurance or bonds or stamps. These investments may then provide future cash flows that may increase or decrease their value. The investment in the stock market is carried out by securities investors. Famous British economist hicks and others argue that the above theory did not consider the factor of income, and therefore unable to determine the level of interest rates, in 1937, and puts forward the is-lm model on the basis of general equilibrium theory. It establishes a theory of interest rates and income at the same time that the four factors of savings and investment, money supply and monetary demand interact. The city of bentugon salvis, in the southwestern state of Rio grande do, has a reputation as the "capital of Brazilian wine" and has a history of almost 150 years. Nearly 85 per cent of Brazil's wine is produced in more than 700 vineyards, which have a total area of less than 400 square kilometres. The wine is fresh and balanced with cabernet sauvignon, merlot and chardonnay. New standards to abolish the "cars" and called the name of the "passenger", is considered to be the of the traditional concept of change, it will change the traditional concept cars as the thought of luxury goods, return to the main is a concept of transport Commenting on the recent renovations, Ms Stephens said: “I am absolutely delighted with the work that has been carried out and Dortech’s customer service and professional installation has been second to none.