Vaporizer pens can be used to inhale a number of different materials. Often, people call vaporizer pens by names that indicate what they are used to vape. The three main types include: - The oil vaporizer pen, which is also called an oil pen or oil vape pen.
The United States is the world's largest economy with a GDP of approximately $18.56 trillion, notably due to high average incomes, a large population, capital investment, moderate unemployment, high consumer spending, a relatively young population, and technological innovation.
China is the largest export economy in the world and the 22nd most complex economy according to the Economic Complexity Index (ECI). In 2013, China exported $2.25T and imported $1.56T, resulting in a positive trade balance of $690B. In 2013 the GDP of China was $9.2T and its GDP per capita was $6.81k.