The most popular thing in 2010 Shanghai Expo maybe pin trading. I’ve known too many many people to collect Expo pins and trading with visits.
Pin trading have been very hot in China since 2008 Beijing Olympic. Many local lapel pin manufacturer are making these expo pins for Shanghai. Trading pins is one of most important tools for you get more happiness during 2010 Shanghai Expo.
From the 20th century, trading pins have become part of sports. In 1896 the first modern Olympic Games, the first one there marked the Olympic Games pin. To the 1924 Olympics, athletes as a pin before they started to become a symbol of friendship.
1980 Winter Olympics from the start, pins began in athletes, circulated among the audience, we also liked to the collection of some of the world represent the peaceful coexistence of the pin. Climate impact of the so-called micro-climate, because of the Olympic Games badge of popular, making some relatively small in Youth Games also became popular badge, and welcomed by the people. In recent years, such as minor league baseball, softball, hockey and football. To the annual ball game season, the major states in the USA, trading pins become very popular among children and adults. In every state have established a large number of specialized point of sale. According to the report: In Williamsport, Pennsylvania area, trading pins almost legal currency. Most of the pins are one-for-one , some have more “exchange rate”, the highest being 1 for10.
The Walt Disney Company involved in trading pins, all kinds of activities they would launch its own pins, such as: Disney park visitors to play, and their employees will exchange their pin.
Through the exchange of each other’s pins can be made many new friends, meet their needs. Although pin is a small souvenir , but the value of its own far more than their size.

Baseball pins were made in the baseball season since many years ago. The early baseball pins were once exclusive to major baseball league and professional baseball teams, but now the baseball trading pins are very popular throughout the baseball sport and it has been a very fun way for youth players to socialize and promote their team.
Pin size
The regular size of a baseball pin is 1-3/4 inches. Most of time a main pin will assembled with a slider pin or a smal hang pin.
Customized

Baseball teams can send their team logo to a lapel pin manufacturer and get the artwork, most of baseball pins are are carved from metal. This allows teams to create their own unique baseball pins.
Creation
Baseball trading pins are produced in much the same way as a colourful coin: A die mold is designed, and then stamped into metal sheets and cut out.
Trading
Players can get a pin from their own team and trade them with opposition after games–a good way to socialize with opposing players.
Special pins
As well as their own team, players can collect pins from professional baseball teams such as the New York Yankees or from historical events or landmarks such as a World Series champion or the National Baseball Hall of Fame.