Ordinary metal commemorative coins are divided into general system of currency and coins refined. Ordinary commemorative coins are made of paper used for printing banknotes or coins metal casting ordinary denomination indicate its legal value, mainly Chinese and foreign events, festivals, anniversaries and rare animals and casting design theme. It is a national issue but may circulate commemorative legal tender. After the release, the equivalent with other circulation of RMB in circulation, their denominations credited money in circulation Humen anniversary commemorative coins customized plants, become part of the money supply. Thus, the first commemorative coins in circulation are legal tender. Its face value is generally: One angle, One million, five million, ten-dollar, etc., can be used with ordinary paper as the equivalent of RMB traded. Commemorative coins produced by the production processes used in the presentation of commemorative coins produced by the production process can be divided into dry sand blasting and wet blasting two. Dry sand blasting blasting two mechanical and air pressure, each of which is divided into manual, automatic or non-automatic continuous variety of ways. Wet paste form blasted with dry sand is not the same company Fenggang Guangzhou custom commemorative coins, generally exhibit liquid, so also with dry sand blasting different forms. Wet sandblasting machine equipment can take many forms, the most common is sandblasting room. Traditional blasting technology is the need to use coins produced production molds selected pattern part of the application of different mesh sand (or metal pellets) for selected bottom or injection into the matte surface pattern, form Cream effect, increasing three-dimensional surface pattern of coins and layering. People's Republic of China 40th anniversary commemorative gold coins and this blasting process 2002 Sanxingdui coins are used. Xin Xin (FIG), custom-made coins Guangzhou Fenggang, Shenzhen custom commemorative coins and provided by Shenzhen Xin Xin, Ltd.. Shenzhen Xin Xin, Ltd. (www.sz896.com) is specialized in "professional production and processing of production and nephrite, Jin Xiang Yu, gold bullion, coins, chapter manufacture" of the enterprise, companies adhering to the "integrity management , the intentions of service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Luo Zhangdong.