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World voltage and plug standard [/M] the original article is directly from the net off, and later found in front of things that is not the plug, and voltage converter, I will delete, and now add some pictures, will be more useful.  
 
 1 world country voltage survey
 
 At present, there are generally two kinds of voltage used in the world, which are 240V ~ 100V, two ~ 130V, respectively. 100V, 110 ~ 130V is classified as low pressure, such as the United States, Japan and other countries and the ship's voltage, attention is safe; 220 ~ 240V is called high pressure, which includes China's 220 volts and 230 volts and many European countries, focusing on efficiency. The use of 220 ~ 230V voltage of the country, there are also the use of 110 ~ 130V voltage situation, such as Sweden, russia. Japan, South Korea's 2
 
 110 - 130V: China American, Canada, Taiwan, Mexico, Panama, Cuba, Lebanon and other 30 countries
 220 ~ 230V: China, Hongkong (200V), the United Kingdom, Germany, France, Italy, Australia, India, Singapore, Thailand, Holland, Spain, Greece, Austria, Philippines, Norway, about 120 countries
 
 2 travel conversion plug
 
 GB plug in China, Australia, New Zealand, Argentina, the use of three flat head.    
 The U.S. standard plug used in the United States, Canada, Japan, Brazil, the Philippines, Thailand and other countries and Taiwan, characterized by a two round flat.    
 The British standard plug used in Hong Kong and the UK, India, Pakistan, Singapore, Malaysia, Vietnam, Indonesia, Maldives, Qatar and other countries and regions, characterized by three lag.    
 European standard (DIN) plug in the European Union (EU) countries Germany, France, the Netherlands, Denmark, Finland, Norway, Poland, Portugal, Austria, Belgium, Hungary, Spain and Sweden, and the Republic of Korea, Russia and other countries use is characterized in that two round.    
 
 South Africa plug is mainly used in South Africa, India, Russia, the characteristics of the three round. There is also the Italy standard (Italian) plug, the Swiss standard (Swiss standard) plug, etc..    
 The same country or region uses many kinds of standards for the same country or region